Home / 9,420.13-12,999.54-5,171.17

Finding the Fourth Proportional to 9,420.13, 12,999.54 and 5,171.17

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Solution

The fourth proportional to 9,420.13, 12,999.54 and 5,171.17 is: 7,136.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.13 : 12,999.54 = 5,171.17 : x
  2. Step 2: Convert to fraction form
    9,420.13/12,999.54 = 5,171.17/x
  3. Step 3: Cross multiply
    9,420.13x = 12,999.54 × 5,171.17
  4. Step 4: Simplify right side
    9,420.13x = 67,222,831.26
  5. Step 5: Solve for x
    x = 67,222,831.26/9,420.13
  6. Step 6: Final answer
    x = 7,136.08

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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.