Home / 28,148.76-38,845.28-15,573.52

Finding the Fourth Proportional to 28,148.76, 38,845.28 and 15,573.52

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Solution

The fourth proportional to 28,148.76, 38,845.28 and 15,573.52 is: 21,491.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.76 : 38,845.28 = 15,573.52 : x
  2. Step 2: Convert to fraction form
    28,148.76/38,845.28 = 15,573.52/x
  3. Step 3: Cross multiply
    28,148.76x = 38,845.28 × 15,573.52
  4. Step 4: Simplify right side
    28,148.76x = 604,957,744.99
  5. Step 5: Solve for x
    x = 604,957,744.99/28,148.76
  6. Step 6: Final answer
    x = 21,491.45

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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.