Home / 20,815,572.10-31,226,332.47-6,439,867.06

Finding the Fourth Proportional to 20,815,572.10, 31,226,332.47 and 6,439,867.06

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Solution

The fourth proportional to 20,815,572.10, 31,226,332.47 and 6,439,867.06 is: 9,660,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815,572.10 : 31,226,332.47 = 6,439,867.06 : x
  2. Step 2: Convert to fraction form
    20,815,572.10/31,226,332.47 = 6,439,867.06/x
  3. Step 3: Cross multiply
    20,815,572.10x = 31,226,332.47 × 6,439,867.06
  4. Step 4: Simplify right side
    20,815,572.10x = 201,093,429,878,161.41
  5. Step 5: Solve for x
    x = 201,093,429,878,161.41/20,815,572.10
  6. Step 6: Final answer
    x = 9,660,720.78

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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.