Home / 18,166.87-25,070.57-9,990.82

Finding the Fourth Proportional to 18,166.87, 25,070.57 and 9,990.82

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Solution

The fourth proportional to 18,166.87, 25,070.57 and 9,990.82 is: 13,787.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,166.87 : 25,070.57 = 9,990.82 : x
  2. Step 2: Convert to fraction form
    18,166.87/25,070.57 = 9,990.82/x
  3. Step 3: Cross multiply
    18,166.87x = 25,070.57 × 9,990.82
  4. Step 4: Simplify right side
    18,166.87x = 250,475,426.81
  5. Step 5: Solve for x
    x = 250,475,426.81/18,166.87
  6. Step 6: Final answer
    x = 13,787.49

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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.