Home / 21,248,775.30-31,881,036.15-8,478,444.90

Finding the Fourth Proportional to 21,248,775.30, 31,881,036.15 and 8,478,444.90

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Solution

The fourth proportional to 21,248,775.30, 31,881,036.15 and 8,478,444.90 is: 12,720,808.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248,775.30 : 31,881,036.15 = 8,478,444.90 : x
  2. Step 2: Convert to fraction form
    21,248,775.30/31,881,036.15 = 8,478,444.90/x
  3. Step 3: Cross multiply
    21,248,775.30x = 31,881,036.15 × 8,478,444.90
  4. Step 4: Simplify right side
    21,248,775.30x = 270,301,608,352,683.12
  5. Step 5: Solve for x
    x = 270,301,608,352,683.12/21,248,775.30
  6. Step 6: Final answer
    x = 12,720,808.82

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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.