Home / 38,280.40-57,420.60-25,806.40

Finding the Fourth Proportional to 38,280.40, 57,420.60 and 25,806.40

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Solution

The fourth proportional to 38,280.40, 57,420.60 and 25,806.40 is: 38,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,280.40 : 57,420.60 = 25,806.40 : x
  2. Step 2: Convert to fraction form
    38,280.40/57,420.60 = 25,806.40/x
  3. Step 3: Cross multiply
    38,280.40x = 57,420.60 × 25,806.40
  4. Step 4: Simplify right side
    38,280.40x = 1,481,818,971.84
  5. Step 5: Solve for x
    x = 1,481,818,971.84/38,280.40
  6. Step 6: Final answer
    x = 38,709.60

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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.