Home / 28,148.50-38,845.20-15,573.52

Finding the Fourth Proportional to 28,148.50, 38,845.20 and 15,573.52

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Solution

The fourth proportional to 28,148.50, 38,845.20 and 15,573.52 is: 21,491.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.50 : 38,845.20 = 15,573.52 : x
  2. Step 2: Convert to fraction form
    28,148.50/38,845.20 = 15,573.52/x
  3. Step 3: Cross multiply
    28,148.50x = 38,845.20 × 15,573.52
  4. Step 4: Simplify right side
    28,148.50x = 604,956,499.10
  5. Step 5: Solve for x
    x = 604,956,499.10/28,148.50
  6. Step 6: Final answer
    x = 21,491.61

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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.