Home / 28,173,116,461.32-38,878,377,680.70-15,485,580,896.04

Finding the Fourth Proportional to 28,173,116,461.32, 38,878,377,680.70 and 15,485,580,896.04

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Solution

The fourth proportional to 28,173,116,461.32, 38,878,377,680.70 and 15,485,580,896.04 is: 21,369,814,145.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173,116,461.32 : 38,878,377,680.70 = 15,485,580,896.04 : x
  2. Step 2: Convert to fraction form
    28,173,116,461.32/38,878,377,680.70 = 15,485,580,896.04/x
  3. Step 3: Cross multiply
    28,173,116,461.32x = 38,878,377,680.70 × 15,485,580,896.04
  4. Step 4: Simplify right side
    28,173,116,461.32x = 602,054,262,681,275,858,944
  5. Step 5: Solve for x
    x = 602,054,262,681,275,858,944/28,173,116,461.32
  6. Step 6: Final answer
    x = 21,369,814,145.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.