Home / 27,748.60-38,290.88-15,809.60

Finding the Fourth Proportional to 27,748.60, 38,290.88 and 15,809.60

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Solution

The fourth proportional to 27,748.60, 38,290.88 and 15,809.60 is: 21,816.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,748.60 : 38,290.88 = 15,809.60 : x
  2. Step 2: Convert to fraction form
    27,748.60/38,290.88 = 15,809.60/x
  3. Step 3: Cross multiply
    27,748.60x = 38,290.88 × 15,809.60
  4. Step 4: Simplify right side
    27,748.60x = 605,363,631.70
  5. Step 5: Solve for x
    x = 605,363,631.70/27,748.60
  6. Step 6: Final answer
    x = 21,816.01

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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.