Home / 28,199.76-38,915.62-15,624.52

Finding the Fourth Proportional to 28,199.76, 38,915.62 and 15,624.52

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Solution

The fourth proportional to 28,199.76, 38,915.62 and 15,624.52 is: 21,561.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,199.76 : 38,915.62 = 15,624.52 : x
  2. Step 2: Convert to fraction form
    28,199.76/38,915.62 = 15,624.52/x
  3. Step 3: Cross multiply
    28,199.76x = 38,915.62 × 15,624.52
  4. Step 4: Simplify right side
    28,199.76x = 608,037,883.00
  5. Step 5: Solve for x
    x = 608,037,883.00/28,199.76
  6. Step 6: Final answer
    x = 21,561.81

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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.