Home / 25,686.45-35,449.85-15,075.86

Finding the Fourth Proportional to 25,686.45, 35,449.85 and 15,075.86

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Solution

The fourth proportional to 25,686.45, 35,449.85 and 15,075.86 is: 20,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,686.45 : 35,449.85 = 15,075.86 : x
  2. Step 2: Convert to fraction form
    25,686.45/35,449.85 = 15,075.86/x
  3. Step 3: Cross multiply
    25,686.45x = 35,449.85 × 15,075.86
  4. Step 4: Simplify right side
    25,686.45x = 534,436,836.06
  5. Step 5: Solve for x
    x = 534,436,836.06/25,686.45
  6. Step 6: Final answer
    x = 20,806.18

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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.