Home / 21,291,216.20-31,900,082.70-9,908,318.60

Finding the Fourth Proportional to 21,291,216.20, 31,900,082.70 and 9,908,318.60

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Solution

The fourth proportional to 21,291,216.20, 31,900,082.70 and 9,908,318.60 is: 14,845,379.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291,216.20 : 31,900,082.70 = 9,908,318.60 : x
  2. Step 2: Convert to fraction form
    21,291,216.20/31,900,082.70 = 9,908,318.60/x
  3. Step 3: Cross multiply
    21,291,216.20x = 31,900,082.70 × 9,908,318.60
  4. Step 4: Simplify right side
    21,291,216.20x = 316,076,182,757,948.19
  5. Step 5: Solve for x
    x = 316,076,182,757,948.19/21,291,216.20
  6. Step 6: Final answer
    x = 14,845,379.42

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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.