Home / 28,311.52-39,078.06-22,685.53

Finding the Fourth Proportional to 28,311.52, 39,078.06 and 22,685.53

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Solution

The fourth proportional to 28,311.52, 39,078.06 and 22,685.53 is: 31,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.52 : 39,078.06 = 22,685.53 : x
  2. Step 2: Convert to fraction form
    28,311.52/39,078.06 = 22,685.53/x
  3. Step 3: Cross multiply
    28,311.52x = 39,078.06 × 22,685.53
  4. Step 4: Simplify right side
    28,311.52x = 886,506,502.47
  5. Step 5: Solve for x
    x = 886,506,502.47/28,311.52
  6. Step 6: Final answer
    x = 31,312.57

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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.