Home / 25,140.90-37,739.08-21,240.40

Finding the Fourth Proportional to 25,140.90, 37,739.08 and 21,240.40

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Solution

The fourth proportional to 25,140.90, 37,739.08 and 21,240.40 is: 31,884.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,140.90 : 37,739.08 = 21,240.40 : x
  2. Step 2: Convert to fraction form
    25,140.90/37,739.08 = 21,240.40/x
  3. Step 3: Cross multiply
    25,140.90x = 37,739.08 × 21,240.40
  4. Step 4: Simplify right side
    25,140.90x = 801,593,154.83
  5. Step 5: Solve for x
    x = 801,593,154.83/25,140.90
  6. Step 6: Final answer
    x = 31,884.03

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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.