Home / 18,374.26-25,356.36-9,990.76

Finding the Fourth Proportional to 18,374.26, 25,356.36 and 9,990.76

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Solution

The fourth proportional to 18,374.26, 25,356.36 and 9,990.76 is: 13,787.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.26 : 25,356.36 = 9,990.76 : x
  2. Step 2: Convert to fraction form
    18,374.26/25,356.36 = 9,990.76/x
  3. Step 3: Cross multiply
    18,374.26x = 25,356.36 × 9,990.76
  4. Step 4: Simplify right side
    18,374.26x = 253,329,307.23
  5. Step 5: Solve for x
    x = 253,329,307.23/18,374.26
  6. Step 6: Final answer
    x = 13,787.18

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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.