Home / 27,807.80-38,374.98-15,871.64

Finding the Fourth Proportional to 27,807.80, 38,374.98 and 15,871.64

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Solution

The fourth proportional to 27,807.80, 38,374.98 and 15,871.64 is: 21,902.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.80 : 38,374.98 = 15,871.64 : x
  2. Step 2: Convert to fraction form
    27,807.80/38,374.98 = 15,871.64/x
  3. Step 3: Cross multiply
    27,807.80x = 38,374.98 × 15,871.64
  4. Step 4: Simplify right side
    27,807.80x = 609,073,867.57
  5. Step 5: Solve for x
    x = 609,073,867.57/27,807.80
  6. Step 6: Final answer
    x = 21,902.99

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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.