Home / 25,785.79-35,581.20-15,710.57

Finding the Fourth Proportional to 25,785.79, 35,581.20 and 15,710.57

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Solution

The fourth proportional to 25,785.79, 35,581.20 and 15,710.57 is: 21,678.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,785.79 : 35,581.20 = 15,710.57 : x
  2. Step 2: Convert to fraction form
    25,785.79/35,581.20 = 15,710.57/x
  3. Step 3: Cross multiply
    25,785.79x = 35,581.20 × 15,710.57
  4. Step 4: Simplify right side
    25,785.79x = 559,000,933.28
  5. Step 5: Solve for x
    x = 559,000,933.28/25,785.79
  6. Step 6: Final answer
    x = 21,678.64

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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.