Home / 9,421.14-13,001.65-5,172.17

Finding the Fourth Proportional to 9,421.14, 13,001.65 and 5,172.17

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Solution

The fourth proportional to 9,421.14, 13,001.65 and 5,172.17 is: 7,137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.14 : 13,001.65 = 5,172.17 : x
  2. Step 2: Convert to fraction form
    9,421.14/13,001.65 = 5,172.17/x
  3. Step 3: Cross multiply
    9,421.14x = 13,001.65 × 5,172.17
  4. Step 4: Simplify right side
    9,421.14x = 67,246,753.96
  5. Step 5: Solve for x
    x = 67,246,753.96/9,421.14
  6. Step 6: Final answer
    x = 7,137.86

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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.