Home / 18,305.02-27,426.18-9,990.87

Finding the Fourth Proportional to 18,305.02, 27,426.18 and 9,990.87

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Solution

The fourth proportional to 18,305.02, 27,426.18 and 9,990.87 is: 14,969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.02 : 27,426.18 = 9,990.87 : x
  2. Step 2: Convert to fraction form
    18,305.02/27,426.18 = 9,990.87/x
  3. Step 3: Cross multiply
    18,305.02x = 27,426.18 × 9,990.87
  4. Step 4: Simplify right side
    18,305.02x = 274,011,328.82
  5. Step 5: Solve for x
    x = 274,011,328.82/18,305.02
  6. Step 6: Final answer
    x = 14,969.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.