Home / 20,515,328.20-30,748,109.10-9,143,705.80

Finding the Fourth Proportional to 20,515,328.20, 30,748,109.10 and 9,143,705.80

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Solution

The fourth proportional to 20,515,328.20, 30,748,109.10 and 9,143,705.80 is: 13,704,468.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,328.20 : 30,748,109.10 = 9,143,705.80 : x
  2. Step 2: Convert to fraction form
    20,515,328.20/30,748,109.10 = 9,143,705.80/x
  3. Step 3: Cross multiply
    20,515,328.20x = 30,748,109.10 × 9,143,705.80
  4. Step 4: Simplify right side
    20,515,328.20x = 281,151,663,516,702.81
  5. Step 5: Solve for x
    x = 281,151,663,516,702.81/20,515,328.20
  6. Step 6: Final answer
    x = 13,704,468.23

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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.