Home / 13,610.47-20,423.49-5,289.40

Finding the Fourth Proportional to 13,610.47, 20,423.49 and 5,289.40

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Solution

The fourth proportional to 13,610.47, 20,423.49 and 5,289.40 is: 7,937.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.47 : 20,423.49 = 5,289.40 : x
  2. Step 2: Convert to fraction form
    13,610.47/20,423.49 = 5,289.40/x
  3. Step 3: Cross multiply
    13,610.47x = 20,423.49 × 5,289.40
  4. Step 4: Simplify right side
    13,610.47x = 108,028,008.01
  5. Step 5: Solve for x
    x = 108,028,008.01/13,610.47
  6. Step 6: Final answer
    x = 7,937.13

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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.