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Finding the Fourth Proportional to 15,152.47, 20,902.03 and 12,613.03

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Solution

The fourth proportional to 15,152.47, 20,902.03 and 12,613.03 is: 17,399.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.47 : 20,902.03 = 12,613.03 : x
  2. Step 2: Convert to fraction form
    15,152.47/20,902.03 = 12,613.03/x
  3. Step 3: Cross multiply
    15,152.47x = 20,902.03 × 12,613.03
  4. Step 4: Simplify right side
    15,152.47x = 263,637,847.66
  5. Step 5: Solve for x
    x = 263,637,847.66/15,152.47
  6. Step 6: Final answer
    x = 17,399.00

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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.