Home / 25,822.35-35,642.48-15,215.40

Finding the Fourth Proportional to 25,822.35, 35,642.48 and 15,215.40

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Solution

The fourth proportional to 25,822.35, 35,642.48 and 15,215.40 is: 21,001.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,822.35 : 35,642.48 = 15,215.40 : x
  2. Step 2: Convert to fraction form
    25,822.35/35,642.48 = 15,215.40/x
  3. Step 3: Cross multiply
    25,822.35x = 35,642.48 × 15,215.40
  4. Step 4: Simplify right side
    25,822.35x = 542,314,514.12
  5. Step 5: Solve for x
    x = 542,314,514.12/25,822.35
  6. Step 6: Final answer
    x = 21,001.75

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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.