Home / 25,856.41-35,685.15-15,782.69

Finding the Fourth Proportional to 25,856.41, 35,685.15 and 15,782.69

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Solution

The fourth proportional to 25,856.41, 35,685.15 and 15,782.69 is: 21,782.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,856.41 : 35,685.15 = 15,782.69 : x
  2. Step 2: Convert to fraction form
    25,856.41/35,685.15 = 15,782.69/x
  3. Step 3: Cross multiply
    25,856.41x = 35,685.15 × 15,782.69
  4. Step 4: Simplify right side
    25,856.41x = 563,207,660.05
  5. Step 5: Solve for x
    x = 563,207,660.05/25,856.41
  6. Step 6: Final answer
    x = 21,782.13

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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.