Home / 25,429.68-35,053.56-20,705.76

Finding the Fourth Proportional to 25,429.68, 35,053.56 and 20,705.76

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Solution

The fourth proportional to 25,429.68, 35,053.56 and 20,705.76 is: 28,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,429.68 : 35,053.56 = 20,705.76 : x
  2. Step 2: Convert to fraction form
    25,429.68/35,053.56 = 20,705.76/x
  3. Step 3: Cross multiply
    25,429.68x = 35,053.56 × 20,705.76
  4. Step 4: Simplify right side
    25,429.68x = 725,810,600.51
  5. Step 5: Solve for x
    x = 725,810,600.51/25,429.68
  6. Step 6: Final answer
    x = 28,541.87

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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.