Home / 25,904.40-38,824.20-18,970.80

Finding the Fourth Proportional to 25,904.40, 38,824.20 and 18,970.80

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Solution

The fourth proportional to 25,904.40, 38,824.20 and 18,970.80 is: 28,432.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,904.40 : 38,824.20 = 18,970.80 : x
  2. Step 2: Convert to fraction form
    25,904.40/38,824.20 = 18,970.80/x
  3. Step 3: Cross multiply
    25,904.40x = 38,824.20 × 18,970.80
  4. Step 4: Simplify right side
    25,904.40x = 736,526,133.36
  5. Step 5: Solve for x
    x = 736,526,133.36/25,904.40
  6. Step 6: Final answer
    x = 28,432.47

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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.