Home / 22,549.45-31,117.62-12,478.32

Finding the Fourth Proportional to 22,549.45, 31,117.62 and 12,478.32

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Solution

The fourth proportional to 22,549.45, 31,117.62 and 12,478.32 is: 17,219.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,549.45 : 31,117.62 = 12,478.32 : x
  2. Step 2: Convert to fraction form
    22,549.45/31,117.62 = 12,478.32/x
  3. Step 3: Cross multiply
    22,549.45x = 31,117.62 × 12,478.32
  4. Step 4: Simplify right side
    22,549.45x = 388,295,620.00
  5. Step 5: Solve for x
    x = 388,295,620.00/22,549.45
  6. Step 6: Final answer
    x = 17,219.74

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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.