Home / 25,643.40-38,465.10-17,770.20

Finding the Fourth Proportional to 25,643.40, 38,465.10 and 17,770.20

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Solution

The fourth proportional to 25,643.40, 38,465.10 and 17,770.20 is: 26,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,643.40 : 38,465.10 = 17,770.20 : x
  2. Step 2: Convert to fraction form
    25,643.40/38,465.10 = 17,770.20/x
  3. Step 3: Cross multiply
    25,643.40x = 38,465.10 × 17,770.20
  4. Step 4: Simplify right side
    25,643.40x = 683,532,520.02
  5. Step 5: Solve for x
    x = 683,532,520.02/25,643.40
  6. Step 6: Final answer
    x = 26,655.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.