Home / 28,390.91-39,153.98-17,781.53

Finding the Fourth Proportional to 28,390.91, 39,153.98 and 17,781.53

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Solution

The fourth proportional to 28,390.91, 39,153.98 and 17,781.53 is: 24,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.91 : 39,153.98 = 17,781.53 : x
  2. Step 2: Convert to fraction form
    28,390.91/39,153.98 = 17,781.53/x
  3. Step 3: Cross multiply
    28,390.91x = 39,153.98 × 17,781.53
  4. Step 4: Simplify right side
    28,390.91x = 696,217,518.67
  5. Step 5: Solve for x
    x = 696,217,518.67/28,390.91
  6. Step 6: Final answer
    x = 24,522.55

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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.