Home / 17,439.70-26,123.10-9,639.40

Finding the Fourth Proportional to 17,439.70, 26,123.10 and 9,639.40

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Solution

The fourth proportional to 17,439.70, 26,123.10 and 9,639.40 is: 14,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,439.70 : 26,123.10 = 9,639.40 : x
  2. Step 2: Convert to fraction form
    17,439.70/26,123.10 = 9,639.40/x
  3. Step 3: Cross multiply
    17,439.70x = 26,123.10 × 9,639.40
  4. Step 4: Simplify right side
    17,439.70x = 251,811,010.14
  5. Step 5: Solve for x
    x = 251,811,010.14/17,439.70
  6. Step 6: Final answer
    x = 14,438.95

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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.