Home / 18,658.13-25,770.08-12,359.57

Finding the Fourth Proportional to 18,658.13, 25,770.08 and 12,359.57

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Solution

The fourth proportional to 18,658.13, 25,770.08 and 12,359.57 is: 17,070.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.13 : 25,770.08 = 12,359.57 : x
  2. Step 2: Convert to fraction form
    18,658.13/25,770.08 = 12,359.57/x
  3. Step 3: Cross multiply
    18,658.13x = 25,770.08 × 12,359.57
  4. Step 4: Simplify right side
    18,658.13x = 318,507,009.71
  5. Step 5: Solve for x
    x = 318,507,009.71/18,658.13
  6. Step 6: Final answer
    x = 17,070.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.