Home / 21,058.64-31,532.52-17,718.80

Finding the Fourth Proportional to 21,058.64, 31,532.52 and 17,718.80

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Solution

The fourth proportional to 21,058.64, 31,532.52 and 17,718.80 is: 26,531.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.64 : 31,532.52 = 17,718.80 : x
  2. Step 2: Convert to fraction form
    21,058.64/31,532.52 = 17,718.80/x
  3. Step 3: Cross multiply
    21,058.64x = 31,532.52 × 17,718.80
  4. Step 4: Simplify right side
    21,058.64x = 558,718,415.38
  5. Step 5: Solve for x
    x = 558,718,415.38/21,058.64
  6. Step 6: Final answer
    x = 26,531.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.