Home / 25,565.40-38,354.46-20,320.20

Finding the Fourth Proportional to 25,565.40, 38,354.46 and 20,320.20

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Solution

The fourth proportional to 25,565.40, 38,354.46 and 20,320.20 is: 30,485.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,565.40 : 38,354.46 = 20,320.20 : x
  2. Step 2: Convert to fraction form
    25,565.40/38,354.46 = 20,320.20/x
  3. Step 3: Cross multiply
    25,565.40x = 38,354.46 × 20,320.20
  4. Step 4: Simplify right side
    25,565.40x = 779,370,298.09
  5. Step 5: Solve for x
    x = 779,370,298.09/25,565.40
  6. Step 6: Final answer
    x = 30,485.36

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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.