Home / 16,685.86-25,041.12-13,438.15

Finding the Fourth Proportional to 16,685.86, 25,041.12 and 13,438.15

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Solution

The fourth proportional to 16,685.86, 25,041.12 and 13,438.15 is: 20,167.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,685.86 : 25,041.12 = 13,438.15 : x
  2. Step 2: Convert to fraction form
    16,685.86/25,041.12 = 13,438.15/x
  3. Step 3: Cross multiply
    16,685.86x = 25,041.12 × 13,438.15
  4. Step 4: Simplify right side
    16,685.86x = 336,506,326.73
  5. Step 5: Solve for x
    x = 336,506,326.73/16,685.86
  6. Step 6: Final answer
    x = 20,167.16

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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.