Home / 25,920.08-35,774.76-15,309.20

Finding the Fourth Proportional to 25,920.08, 35,774.76 and 15,309.20

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Solution

The fourth proportional to 25,920.08, 35,774.76 and 15,309.20 is: 21,129.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920.08 : 35,774.76 = 15,309.20 : x
  2. Step 2: Convert to fraction form
    25,920.08/35,774.76 = 15,309.20/x
  3. Step 3: Cross multiply
    25,920.08x = 35,774.76 × 15,309.20
  4. Step 4: Simplify right side
    25,920.08x = 547,682,955.79
  5. Step 5: Solve for x
    x = 547,682,955.79/25,920.08
  6. Step 6: Final answer
    x = 21,129.68

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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.