Home / 13,710.30-20,565.45-12,500.70

Finding the Fourth Proportional to 13,710.30, 20,565.45 and 12,500.70

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Solution

The fourth proportional to 13,710.30, 20,565.45 and 12,500.70 is: 18,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.30 : 20,565.45 = 12,500.70 : x
  2. Step 2: Convert to fraction form
    13,710.30/20,565.45 = 12,500.70/x
  3. Step 3: Cross multiply
    13,710.30x = 20,565.45 × 12,500.70
  4. Step 4: Simplify right side
    13,710.30x = 257,082,520.82
  5. Step 5: Solve for x
    x = 257,082,520.82/13,710.30
  6. Step 6: Final answer
    x = 18,751.05

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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.