Home / 27,987.08-38,622.13-15,411.83

Finding the Fourth Proportional to 27,987.08, 38,622.13 and 15,411.83

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Solution

The fourth proportional to 27,987.08, 38,622.13 and 15,411.83 is: 21,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.08 : 38,622.13 = 15,411.83 : x
  2. Step 2: Convert to fraction form
    27,987.08/38,622.13 = 15,411.83/x
  3. Step 3: Cross multiply
    27,987.08x = 38,622.13 × 15,411.83
  4. Step 4: Simplify right side
    27,987.08x = 595,237,701.80
  5. Step 5: Solve for x
    x = 595,237,701.80/27,987.08
  6. Step 6: Final answer
    x = 21,268.30

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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.