Home / 28,117.91-38,801.52-15,370.86

Finding the Fourth Proportional to 28,117.91, 38,801.52 and 15,370.86

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Solution

The fourth proportional to 28,117.91, 38,801.52 and 15,370.86 is: 21,211.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.91 : 38,801.52 = 15,370.86 : x
  2. Step 2: Convert to fraction form
    28,117.91/38,801.52 = 15,370.86/x
  3. Step 3: Cross multiply
    28,117.91x = 38,801.52 × 15,370.86
  4. Step 4: Simplify right side
    28,117.91x = 596,412,731.71
  5. Step 5: Solve for x
    x = 596,412,731.71/28,117.91
  6. Step 6: Final answer
    x = 21,211.13

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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.