Home / 13,440.95-18,548.10-7,391.18

Finding the Fourth Proportional to 13,440.95, 18,548.10 and 7,391.18

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Solution

The fourth proportional to 13,440.95, 18,548.10 and 7,391.18 is: 10,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.95 : 18,548.10 = 7,391.18 : x
  2. Step 2: Convert to fraction form
    13,440.95/18,548.10 = 7,391.18/x
  3. Step 3: Cross multiply
    13,440.95x = 18,548.10 × 7,391.18
  4. Step 4: Simplify right side
    13,440.95x = 137,092,345.76
  5. Step 5: Solve for x
    x = 137,092,345.76/13,440.95
  6. Step 6: Final answer
    x = 10,199.60

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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.