Home / 27,817.90-38,389.40-15,882.35

Finding the Fourth Proportional to 27,817.90, 38,389.40 and 15,882.35

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Solution

The fourth proportional to 27,817.90, 38,389.40 and 15,882.35 is: 21,918.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,817.90 : 38,389.40 = 15,882.35 : x
  2. Step 2: Convert to fraction form
    27,817.90/38,389.40 = 15,882.35/x
  3. Step 3: Cross multiply
    27,817.90x = 38,389.40 × 15,882.35
  4. Step 4: Simplify right side
    27,817.90x = 609,713,711.70
  5. Step 5: Solve for x
    x = 609,713,711.70/27,817.90
  6. Step 6: Final answer
    x = 21,918.04

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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.