Home / 13,373.61-18,455.29-7,405.12

Finding the Fourth Proportional to 13,373.61, 18,455.29 and 7,405.12

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Solution

The fourth proportional to 13,373.61, 18,455.29 and 7,405.12 is: 10,218.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.61 : 18,455.29 = 7,405.12 : x
  2. Step 2: Convert to fraction form
    13,373.61/18,455.29 = 7,405.12/x
  3. Step 3: Cross multiply
    13,373.61x = 18,455.29 × 7,405.12
  4. Step 4: Simplify right side
    13,373.61x = 136,663,683.29
  5. Step 5: Solve for x
    x = 136,663,683.29/13,373.61
  6. Step 6: Final answer
    x = 10,218.91

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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.