Home / 28,510.78-42,767.92-10,980.66

Finding the Fourth Proportional to 28,510.78, 42,767.92 and 10,980.66

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Solution

The fourth proportional to 28,510.78, 42,767.92 and 10,980.66 is: 16,471.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.78 : 42,767.92 = 10,980.66 : x
  2. Step 2: Convert to fraction form
    28,510.78/42,767.92 = 10,980.66/x
  3. Step 3: Cross multiply
    28,510.78x = 42,767.92 × 10,980.66
  4. Step 4: Simplify right side
    28,510.78x = 469,619,988.43
  5. Step 5: Solve for x
    x = 469,619,988.43/28,510.78
  6. Step 6: Final answer
    x = 16,471.66

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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.