Home / 15,184.29-20,931.45-11,821.17

Finding the Fourth Proportional to 15,184.29, 20,931.45 and 11,821.17

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Solution

The fourth proportional to 15,184.29, 20,931.45 and 11,821.17 is: 16,295.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.29 : 20,931.45 = 11,821.17 : x
  2. Step 2: Convert to fraction form
    15,184.29/20,931.45 = 11,821.17/x
  3. Step 3: Cross multiply
    15,184.29x = 20,931.45 × 11,821.17
  4. Step 4: Simplify right side
    15,184.29x = 247,434,228.80
  5. Step 5: Solve for x
    x = 247,434,228.80/15,184.29
  6. Step 6: Final answer
    x = 16,295.41

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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.