Home / 21,010,655.60-31,513,616.32-5,659,068.90

Finding the Fourth Proportional to 21,010,655.60, 31,513,616.32 and 5,659,068.90

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Solution

The fourth proportional to 21,010,655.60, 31,513,616.32 and 5,659,068.90 is: 8,487,965.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010,655.60 : 31,513,616.32 = 5,659,068.90 : x
  2. Step 2: Convert to fraction form
    21,010,655.60/31,513,616.32 = 5,659,068.90/x
  3. Step 3: Cross multiply
    21,010,655.60x = 31,513,616.32 × 5,659,068.90
  4. Step 4: Simplify right side
    21,010,655.60x = 178,337,726,014,749.12
  5. Step 5: Solve for x
    x = 178,337,726,014,749.12/21,010,655.60
  6. Step 6: Final answer
    x = 8,487,965.79

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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.