Home / 28,134.90-38,826.09-15,559.74

Finding the Fourth Proportional to 28,134.90, 38,826.09 and 15,559.74

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Solution

The fourth proportional to 28,134.90, 38,826.09 and 15,559.74 is: 21,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.90 : 38,826.09 = 15,559.74 : x
  2. Step 2: Convert to fraction form
    28,134.90/38,826.09 = 15,559.74/x
  3. Step 3: Cross multiply
    28,134.90x = 38,826.09 × 15,559.74
  4. Step 4: Simplify right side
    28,134.90x = 604,123,865.62
  5. Step 5: Solve for x
    x = 604,123,865.62/28,134.90
  6. Step 6: Final answer
    x = 21,472.40

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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.