Home / 22,549.40-31,118.21-12,478.26

Finding the Fourth Proportional to 22,549.40, 31,118.21 and 12,478.26

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Solution

The fourth proportional to 22,549.40, 31,118.21 and 12,478.26 is: 17,220.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,549.40 : 31,118.21 = 12,478.26 : x
  2. Step 2: Convert to fraction form
    22,549.40/31,118.21 = 12,478.26/x
  3. Step 3: Cross multiply
    22,549.40x = 31,118.21 × 12,478.26
  4. Step 4: Simplify right side
    22,549.40x = 388,301,115.11
  5. Step 5: Solve for x
    x = 388,301,115.11/22,549.40
  6. Step 6: Final answer
    x = 17,220.02

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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.