Home / 13,031.20-17,985.12-9,696.16

Finding the Fourth Proportional to 13,031.20, 17,985.12 and 9,696.16

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Solution

The fourth proportional to 13,031.20, 17,985.12 and 9,696.16 is: 13,382.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,031.20 : 17,985.12 = 9,696.16 : x
  2. Step 2: Convert to fraction form
    13,031.20/17,985.12 = 9,696.16/x
  3. Step 3: Cross multiply
    13,031.20x = 17,985.12 × 9,696.16
  4. Step 4: Simplify right side
    13,031.20x = 174,386,601.14
  5. Step 5: Solve for x
    x = 174,386,601.14/13,031.20
  6. Step 6: Final answer
    x = 13,382.24

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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.