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Finding the Fourth Proportional to 15,373.20, 23,059.80 and 13,429.20

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Solution

The fourth proportional to 15,373.20, 23,059.80 and 13,429.20 is: 20,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,373.20 : 23,059.80 = 13,429.20 : x
  2. Step 2: Convert to fraction form
    15,373.20/23,059.80 = 13,429.20/x
  3. Step 3: Cross multiply
    15,373.20x = 23,059.80 × 13,429.20
  4. Step 4: Simplify right side
    15,373.20x = 309,674,666.16
  5. Step 5: Solve for x
    x = 309,674,666.16/15,373.20
  6. Step 6: Final answer
    x = 20,143.80

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1.5x scale

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.