Home / 25,821.20-38,656.20-19,276.40

Finding the Fourth Proportional to 25,821.20, 38,656.20 and 19,276.40

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Solution

The fourth proportional to 25,821.20, 38,656.20 and 19,276.40 is: 28,858.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,821.20 : 38,656.20 = 19,276.40 : x
  2. Step 2: Convert to fraction form
    25,821.20/38,656.20 = 19,276.40/x
  3. Step 3: Cross multiply
    25,821.20x = 38,656.20 × 19,276.40
  4. Step 4: Simplify right side
    25,821.20x = 745,152,373.68
  5. Step 5: Solve for x
    x = 745,152,373.68/25,821.20
  6. Step 6: Final answer
    x = 28,858.16

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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.