Home / 25,430.40-38,145.60-17,557.20

Finding the Fourth Proportional to 25,430.40, 38,145.60 and 17,557.20

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Solution

The fourth proportional to 25,430.40, 38,145.60 and 17,557.20 is: 26,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,430.40 : 38,145.60 = 17,557.20 : x
  2. Step 2: Convert to fraction form
    25,430.40/38,145.60 = 17,557.20/x
  3. Step 3: Cross multiply
    25,430.40x = 38,145.60 × 17,557.20
  4. Step 4: Simplify right side
    25,430.40x = 669,729,928.32
  5. Step 5: Solve for x
    x = 669,729,928.32/25,430.40
  6. Step 6: Final answer
    x = 26,335.80

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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.