Home / 27,807.10-38,380.71-15,877.36

Finding the Fourth Proportional to 27,807.10, 38,380.71 and 15,877.36

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Solution

The fourth proportional to 27,807.10, 38,380.71 and 15,877.36 is: 21,914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.10 : 38,380.71 = 15,877.36 : x
  2. Step 2: Convert to fraction form
    27,807.10/38,380.71 = 15,877.36/x
  3. Step 3: Cross multiply
    27,807.10x = 38,380.71 × 15,877.36
  4. Step 4: Simplify right side
    27,807.10x = 609,384,349.73
  5. Step 5: Solve for x
    x = 609,384,349.73/27,807.10
  6. Step 6: Final answer
    x = 21,914.70

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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.