Home / 13,089.47-18,063.65-7,121.14

Finding the Fourth Proportional to 13,089.47, 18,063.65 and 7,121.14

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Solution

The fourth proportional to 13,089.47, 18,063.65 and 7,121.14 is: 9,827.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.47 : 18,063.65 = 7,121.14 : x
  2. Step 2: Convert to fraction form
    13,089.47/18,063.65 = 7,121.14/x
  3. Step 3: Cross multiply
    13,089.47x = 18,063.65 × 7,121.14
  4. Step 4: Simplify right side
    13,089.47x = 128,633,753.20
  5. Step 5: Solve for x
    x = 128,633,753.20/13,089.47
  6. Step 6: Final answer
    x = 9,827.27

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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.