Home / 28,502.70-39,332.88-15,927.42

Finding the Fourth Proportional to 28,502.70, 39,332.88 and 15,927.42

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Solution

The fourth proportional to 28,502.70, 39,332.88 and 15,927.42 is: 21,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.70 : 39,332.88 = 15,927.42 : x
  2. Step 2: Convert to fraction form
    28,502.70/39,332.88 = 15,927.42/x
  3. Step 3: Cross multiply
    28,502.70x = 39,332.88 × 15,927.42
  4. Step 4: Simplify right side
    28,502.70x = 626,471,299.57
  5. Step 5: Solve for x
    x = 626,471,299.57/28,502.70
  6. Step 6: Final answer
    x = 21,979.37

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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.