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Finding the Fourth Proportional to 15,098.55, 20,835.12 and 8,384.01

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Solution

The fourth proportional to 15,098.55, 20,835.12 and 8,384.01 is: 11,569.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,098.55 : 20,835.12 = 8,384.01 : x
  2. Step 2: Convert to fraction form
    15,098.55/20,835.12 = 8,384.01/x
  3. Step 3: Cross multiply
    15,098.55x = 20,835.12 × 8,384.01
  4. Step 4: Simplify right side
    15,098.55x = 174,681,807.74
  5. Step 5: Solve for x
    x = 174,681,807.74/15,098.55
  6. Step 6: Final answer
    x = 11,569.44

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1.5x scale

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.