Home / 25,219.40-37,829.10-21,720.20

Finding the Fourth Proportional to 25,219.40, 37,829.10 and 21,720.20

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Solution

The fourth proportional to 25,219.40, 37,829.10 and 21,720.20 is: 32,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,219.40 : 37,829.10 = 21,720.20 : x
  2. Step 2: Convert to fraction form
    25,219.40/37,829.10 = 21,720.20/x
  3. Step 3: Cross multiply
    25,219.40x = 37,829.10 × 21,720.20
  4. Step 4: Simplify right side
    25,219.40x = 821,655,617.82
  5. Step 5: Solve for x
    x = 821,655,617.82/25,219.40
  6. Step 6: Final answer
    x = 32,580.30

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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.