Home / 18,385.32-25,381.14-11,315.82

Finding the Fourth Proportional to 18,385.32, 25,381.14 and 11,315.82

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Solution

The fourth proportional to 18,385.32, 25,381.14 and 11,315.82 is: 15,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.32 : 25,381.14 = 11,315.82 : x
  2. Step 2: Convert to fraction form
    18,385.32/25,381.14 = 11,315.82/x
  3. Step 3: Cross multiply
    18,385.32x = 25,381.14 × 11,315.82
  4. Step 4: Simplify right side
    18,385.32x = 287,208,411.63
  5. Step 5: Solve for x
    x = 287,208,411.63/18,385.32
  6. Step 6: Final answer
    x = 15,621.62

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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.