Home / 27,740.87-38,279.65-15,803.49

Finding the Fourth Proportional to 27,740.87, 38,279.65 and 15,803.49

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Solution

The fourth proportional to 27,740.87, 38,279.65 and 15,803.49 is: 21,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,740.87 : 38,279.65 = 15,803.49 : x
  2. Step 2: Convert to fraction form
    27,740.87/38,279.65 = 15,803.49/x
  3. Step 3: Cross multiply
    27,740.87x = 38,279.65 × 15,803.49
  4. Step 4: Simplify right side
    27,740.87x = 604,952,065.98
  5. Step 5: Solve for x
    x = 604,952,065.98/27,740.87
  6. Step 6: Final answer
    x = 21,807.25

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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.