Home / 13,360.61-20,038.17-8,439.86

Finding the Fourth Proportional to 13,360.61, 20,038.17 and 8,439.86

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Solution

The fourth proportional to 13,360.61, 20,038.17 and 8,439.86 is: 12,658.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.61 : 20,038.17 = 8,439.86 : x
  2. Step 2: Convert to fraction form
    13,360.61/20,038.17 = 8,439.86/x
  3. Step 3: Cross multiply
    13,360.61x = 20,038.17 × 8,439.86
  4. Step 4: Simplify right side
    13,360.61x = 169,119,349.46
  5. Step 5: Solve for x
    x = 169,119,349.46/13,360.61
  6. Step 6: Final answer
    x = 12,658.06

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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.