Home / 20,404,885.60-28,158,399.60-11,238,381.28

Finding the Fourth Proportional to 20,404,885.60, 28,158,399.60 and 11,238,381.28

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Solution

The fourth proportional to 20,404,885.60, 28,158,399.60 and 11,238,381.28 is: 15,508,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404,885.60 : 28,158,399.60 = 11,238,381.28 : x
  2. Step 2: Convert to fraction form
    20,404,885.60/28,158,399.60 = 11,238,381.28/x
  3. Step 3: Cross multiply
    20,404,885.60x = 28,158,399.60 × 11,238,381.28
  4. Step 4: Simplify right side
    20,404,885.60x = 316,454,830,939,399.50
  5. Step 5: Solve for x
    x = 316,454,830,939,399.50/20,404,885.60
  6. Step 6: Final answer
    x = 15,508,777.51

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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.