Home / 28,150.70-42,158.76-15,639.69

Finding the Fourth Proportional to 28,150.70, 42,158.76 and 15,639.69

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Solution

The fourth proportional to 28,150.70, 42,158.76 and 15,639.69 is: 23,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,150.70 : 42,158.76 = 15,639.69 : x
  2. Step 2: Convert to fraction form
    28,150.70/42,158.76 = 15,639.69/x
  3. Step 3: Cross multiply
    28,150.70x = 42,158.76 × 15,639.69
  4. Step 4: Simplify right side
    28,150.70x = 659,349,887.46
  5. Step 5: Solve for x
    x = 659,349,887.46/28,150.70
  6. Step 6: Final answer
    x = 23,422.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.