Home / 27,830.16-38,403.51-15,891.89

Finding the Fourth Proportional to 27,830.16, 38,403.51 and 15,891.89

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Solution

The fourth proportional to 27,830.16, 38,403.51 and 15,891.89 is: 21,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,830.16 : 38,403.51 = 15,891.89 : x
  2. Step 2: Convert to fraction form
    27,830.16/38,403.51 = 15,891.89/x
  3. Step 3: Cross multiply
    27,830.16x = 38,403.51 × 15,891.89
  4. Step 4: Simplify right side
    27,830.16x = 610,304,164.52
  5. Step 5: Solve for x
    x = 610,304,164.52/27,830.16
  6. Step 6: Final answer
    x = 21,929.60

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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.