Home / 27,743.64-38,280.24-15,803.70

Finding the Fourth Proportional to 27,743.64, 38,280.24 and 15,803.70

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Solution

The fourth proportional to 27,743.64, 38,280.24 and 15,803.70 is: 21,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,743.64 : 38,280.24 = 15,803.70 : x
  2. Step 2: Convert to fraction form
    27,743.64/38,280.24 = 15,803.70/x
  3. Step 3: Cross multiply
    27,743.64x = 38,280.24 × 15,803.70
  4. Step 4: Simplify right side
    27,743.64x = 604,969,428.89
  5. Step 5: Solve for x
    x = 604,969,428.89/27,743.64
  6. Step 6: Final answer
    x = 21,805.70

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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.