Home / 25,866.87-35,695.28-15,812.15

Finding the Fourth Proportional to 25,866.87, 35,695.28 and 15,812.15

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Solution

The fourth proportional to 25,866.87, 35,695.28 and 15,812.15 is: 21,820.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,866.87 : 35,695.28 = 15,812.15 : x
  2. Step 2: Convert to fraction form
    25,866.87/35,695.28 = 15,812.15/x
  3. Step 3: Cross multiply
    25,866.87x = 35,695.28 × 15,812.15
  4. Step 4: Simplify right side
    25,866.87x = 564,418,864.11
  5. Step 5: Solve for x
    x = 564,418,864.11/25,866.87
  6. Step 6: Final answer
    x = 21,820.15

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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.