Home / 15,125.39-20,869.95-8,836.55

Finding the Fourth Proportional to 15,125.39, 20,869.95 and 8,836.55

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Solution

The fourth proportional to 15,125.39, 20,869.95 and 8,836.55 is: 12,192.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.39 : 20,869.95 = 8,836.55 : x
  2. Step 2: Convert to fraction form
    15,125.39/20,869.95 = 8,836.55/x
  3. Step 3: Cross multiply
    15,125.39x = 20,869.95 × 8,836.55
  4. Step 4: Simplify right side
    15,125.39x = 184,418,356.67
  5. Step 5: Solve for x
    x = 184,418,356.67/15,125.39
  6. Step 6: Final answer
    x = 12,192.63

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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.