Home / 21,357,812.56-29,465,646.33-15,789,429.76

Finding the Fourth Proportional to 21,357,812.56, 29,465,646.33 and 15,789,429.76

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Solution

The fourth proportional to 21,357,812.56, 29,465,646.33 and 15,789,429.76 is: 21,783,399.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357,812.56 : 29,465,646.33 = 15,789,429.76 : x
  2. Step 2: Convert to fraction form
    21,357,812.56/29,465,646.33 = 15,789,429.76/x
  3. Step 3: Cross multiply
    21,357,812.56x = 29,465,646.33 × 15,789,429.76
  4. Step 4: Simplify right side
    21,357,812.56x = 465,245,753,060,536.75
  5. Step 5: Solve for x
    x = 465,245,753,060,536.75/21,357,812.56
  6. Step 6: Final answer
    x = 21,783,399.01

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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.