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Finding the Fourth Proportional to 25,477.80, 38,139.90 and 22,405.80

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Solution

The fourth proportional to 25,477.80, 38,139.90 and 22,405.80 is: 33,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,477.80 : 38,139.90 = 22,405.80 : x
  2. Step 2: Convert to fraction form
    25,477.80/38,139.90 = 22,405.80/x
  3. Step 3: Cross multiply
    25,477.80x = 38,139.90 × 22,405.80
  4. Step 4: Simplify right side
    25,477.80x = 854,554,971.42
  5. Step 5: Solve for x
    x = 854,554,971.42/25,477.80
  6. Step 6: Final answer
    x = 33,541.16

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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.