Home / 13,610.02-20,332.35-8,639.86

Finding the Fourth Proportional to 13,610.02, 20,332.35 and 8,639.86

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Solution

The fourth proportional to 13,610.02, 20,332.35 and 8,639.86 is: 12,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.02 : 20,332.35 = 8,639.86 : x
  2. Step 2: Convert to fraction form
    13,610.02/20,332.35 = 8,639.86/x
  3. Step 3: Cross multiply
    13,610.02x = 20,332.35 × 8,639.86
  4. Step 4: Simplify right side
    13,610.02x = 175,668,614.27
  5. Step 5: Solve for x
    x = 175,668,614.27/13,610.02
  6. Step 6: Final answer
    x = 12,907.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.