Home / 28,515.50-42,775.64-10,508.63

Finding the Fourth Proportional to 28,515.50, 42,775.64 and 10,508.63

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Solution

The fourth proportional to 28,515.50, 42,775.64 and 10,508.63 is: 15,763.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.50 : 42,775.64 = 10,508.63 : x
  2. Step 2: Convert to fraction form
    28,515.50/42,775.64 = 10,508.63/x
  3. Step 3: Cross multiply
    28,515.50x = 42,775.64 × 10,508.63
  4. Step 4: Simplify right side
    28,515.50x = 449,513,373.77
  5. Step 5: Solve for x
    x = 449,513,373.77/28,515.50
  6. Step 6: Final answer
    x = 15,763.83

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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.