Home / 15,419,904-21,279,934.08-8,543,742.72

Finding the Fourth Proportional to 15,419,904, 21,279,934.08 and 8,543,742.72

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Solution

The fourth proportional to 15,419,904, 21,279,934.08 and 8,543,742.72 is: 11,790,623.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419,904 : 21,279,934.08 = 8,543,742.72 : x
  2. Step 2: Convert to fraction form
    15,419,904/21,279,934.08 = 8,543,742.72/x
  3. Step 3: Cross multiply
    15,419,904x = 21,279,934.08 × 8,543,742.72
  4. Step 4: Simplify right side
    15,419,904x = 181,810,281,878,079.91
  5. Step 5: Solve for x
    x = 181,810,281,878,079.91/15,419,904
  6. Step 6: Final answer
    x = 11,790,623.46

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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.