Home / 27,747.64-38,285.76-15,807.70

Finding the Fourth Proportional to 27,747.64, 38,285.76 and 15,807.70

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Solution

The fourth proportional to 27,747.64, 38,285.76 and 15,807.70 is: 21,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,747.64 : 38,285.76 = 15,807.70 : x
  2. Step 2: Convert to fraction form
    27,747.64/38,285.76 = 15,807.70/x
  3. Step 3: Cross multiply
    27,747.64x = 38,285.76 × 15,807.70
  4. Step 4: Simplify right side
    27,747.64x = 605,209,808.35
  5. Step 5: Solve for x
    x = 605,209,808.35/27,747.64
  6. Step 6: Final answer
    x = 21,811.22

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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.