Home / 25,871.60-35,685.96-21,148.40

Finding the Fourth Proportional to 25,871.60, 35,685.96 and 21,148.40

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Solution

The fourth proportional to 25,871.60, 35,685.96 and 21,148.40 is: 29,171.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,871.60 : 35,685.96 = 21,148.40 : x
  2. Step 2: Convert to fraction form
    25,871.60/35,685.96 = 21,148.40/x
  3. Step 3: Cross multiply
    25,871.60x = 35,685.96 × 21,148.40
  4. Step 4: Simplify right side
    25,871.60x = 754,700,956.46
  5. Step 5: Solve for x
    x = 754,700,956.46/25,871.60
  6. Step 6: Final answer
    x = 29,171.02

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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.