Home / 27,807.64-38,375.16-15,870.73

Finding the Fourth Proportional to 27,807.64, 38,375.16 and 15,870.73

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Solution

The fourth proportional to 27,807.64, 38,375.16 and 15,870.73 is: 21,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.64 : 38,375.16 = 15,870.73 : x
  2. Step 2: Convert to fraction form
    27,807.64/38,375.16 = 15,870.73/x
  3. Step 3: Cross multiply
    27,807.64x = 38,375.16 × 15,870.73
  4. Step 4: Simplify right side
    27,807.64x = 609,041,723.71
  5. Step 5: Solve for x
    x = 609,041,723.71/27,807.64
  6. Step 6: Final answer
    x = 21,901.96

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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.