Home / 21,056,680.08-31,585,015.80-11,480,112.72

Finding the Fourth Proportional to 21,056,680.08, 31,585,015.80 and 11,480,112.72

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Solution

The fourth proportional to 21,056,680.08, 31,585,015.80 and 11,480,112.72 is: 17,220,166.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056,680.08 : 31,585,015.80 = 11,480,112.72 : x
  2. Step 2: Convert to fraction form
    21,056,680.08/31,585,015.80 = 11,480,112.72/x
  3. Step 3: Cross multiply
    21,056,680.08x = 31,585,015.80 × 11,480,112.72
  4. Step 4: Simplify right side
    21,056,680.08x = 362,599,541,646,981
  5. Step 5: Solve for x
    x = 362,599,541,646,981/21,056,680.08
  6. Step 6: Final answer
    x = 17,220,166.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.