Home / 25,875.92-35,707.68-15,821.12

Finding the Fourth Proportional to 25,875.92, 35,707.68 and 15,821.12

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Solution

The fourth proportional to 25,875.92, 35,707.68 and 15,821.12 is: 21,832.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,875.92 : 35,707.68 = 15,821.12 : x
  2. Step 2: Convert to fraction form
    25,875.92/35,707.68 = 15,821.12/x
  3. Step 3: Cross multiply
    25,875.92x = 35,707.68 × 15,821.12
  4. Step 4: Simplify right side
    25,875.92x = 564,935,490.20
  5. Step 5: Solve for x
    x = 564,935,490.20/25,875.92
  6. Step 6: Final answer
    x = 21,832.48

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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.