Home / 28,510.95-42,767.31-9,790.74

Finding the Fourth Proportional to 28,510.95, 42,767.31 and 9,790.74

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Solution

The fourth proportional to 28,510.95, 42,767.31 and 9,790.74 is: 14,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.95 : 42,767.31 = 9,790.74 : x
  2. Step 2: Convert to fraction form
    28,510.95/42,767.31 = 9,790.74/x
  3. Step 3: Cross multiply
    28,510.95x = 42,767.31 × 9,790.74
  4. Step 4: Simplify right side
    28,510.95x = 418,723,612.71
  5. Step 5: Solve for x
    x = 418,723,612.71/28,510.95
  6. Step 6: Final answer
    x = 14,686.41

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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.