Home / 22,551.15-31,117.77-12,478.17

Finding the Fourth Proportional to 22,551.15, 31,117.77 and 12,478.17

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Solution

The fourth proportional to 22,551.15, 31,117.77 and 12,478.17 is: 17,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.15 : 31,117.77 = 12,478.17 : x
  2. Step 2: Convert to fraction form
    22,551.15/31,117.77 = 12,478.17/x
  3. Step 3: Cross multiply
    22,551.15x = 31,117.77 × 12,478.17
  4. Step 4: Simplify right side
    22,551.15x = 388,292,824.08
  5. Step 5: Solve for x
    x = 388,292,824.08/22,551.15
  6. Step 6: Final answer
    x = 17,218.32

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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.