Home / 20,375,479.31-28,133,944.10-15,658,403.10

Finding the Fourth Proportional to 20,375,479.31, 28,133,944.10 and 15,658,403.10

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Solution

The fourth proportional to 20,375,479.31, 28,133,944.10 and 15,658,403.10 is: 21,620,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375,479.31 : 28,133,944.10 = 15,658,403.10 : x
  2. Step 2: Convert to fraction form
    20,375,479.31/28,133,944.10 = 15,658,403.10/x
  3. Step 3: Cross multiply
    20,375,479.31x = 28,133,944.10 × 15,658,403.10
  4. Step 4: Simplify right side
    20,375,479.31x = 440,532,637,432,374.69
  5. Step 5: Solve for x
    x = 440,532,637,432,374.69/20,375,479.31
  6. Step 6: Final answer
    x = 21,620,725.13

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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.