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Finding the Fourth Proportional to 18,376.58, 25,359.22 and 10,721.32

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Solution

The fourth proportional to 18,376.58, 25,359.22 and 10,721.32 is: 14,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.58 : 25,359.22 = 10,721.32 : x
  2. Step 2: Convert to fraction form
    18,376.58/25,359.22 = 10,721.32/x
  3. Step 3: Cross multiply
    18,376.58x = 25,359.22 × 10,721.32
  4. Step 4: Simplify right side
    18,376.58x = 271,884,312.57
  5. Step 5: Solve for x
    x = 271,884,312.57/18,376.58
  6. Step 6: Final answer
    x = 14,795.15

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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.