Home / 13,490.18-18,616.76-7,440.50

Finding the Fourth Proportional to 13,490.18, 18,616.76 and 7,440.50

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Solution

The fourth proportional to 13,490.18, 18,616.76 and 7,440.50 is: 10,268.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.18 : 18,616.76 = 7,440.50 : x
  2. Step 2: Convert to fraction form
    13,490.18/18,616.76 = 7,440.50/x
  3. Step 3: Cross multiply
    13,490.18x = 18,616.76 × 7,440.50
  4. Step 4: Simplify right side
    13,490.18x = 138,517,872.49
  5. Step 5: Solve for x
    x = 138,517,872.49/13,490.18
  6. Step 6: Final answer
    x = 10,268.06

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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.