Home / 15,580,918.78-21,502,781.20-8,611,446.40

Finding the Fourth Proportional to 15,580,918.78, 21,502,781.20 and 8,611,446.40

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Solution

The fourth proportional to 15,580,918.78, 21,502,781.20 and 8,611,446.40 is: 11,884,411.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580,918.78 : 21,502,781.20 = 8,611,446.40 : x
  2. Step 2: Convert to fraction form
    15,580,918.78/21,502,781.20 = 8,611,446.40/x
  3. Step 3: Cross multiply
    15,580,918.78x = 21,502,781.20 × 8,611,446.40
  4. Step 4: Simplify right side
    15,580,918.78x = 185,170,047,754,727.69
  5. Step 5: Solve for x
    x = 185,170,047,754,727.69/15,580,918.78
  6. Step 6: Final answer
    x = 11,884,411.33

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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.