Home / 25,651.40-38,477.12-20,490.08

Finding the Fourth Proportional to 25,651.40, 38,477.12 and 20,490.08

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Solution

The fourth proportional to 25,651.40, 38,477.12 and 20,490.08 is: 30,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,651.40 : 38,477.12 = 20,490.08 : x
  2. Step 2: Convert to fraction form
    25,651.40/38,477.12 = 20,490.08/x
  3. Step 3: Cross multiply
    25,651.40x = 38,477.12 × 20,490.08
  4. Step 4: Simplify right side
    25,651.40x = 788,398,972.13
  5. Step 5: Solve for x
    x = 788,398,972.13/25,651.40
  6. Step 6: Final answer
    x = 30,735.13

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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.