Home / 25,575.66-38,312.46-20,319.57

Finding the Fourth Proportional to 25,575.66, 38,312.46 and 20,319.57

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Solution

The fourth proportional to 25,575.66, 38,312.46 and 20,319.57 is: 30,438.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,575.66 : 38,312.46 = 20,319.57 : x
  2. Step 2: Convert to fraction form
    25,575.66/38,312.46 = 20,319.57/x
  3. Step 3: Cross multiply
    25,575.66x = 38,312.46 × 20,319.57
  4. Step 4: Simplify right side
    25,575.66x = 778,492,712.84
  5. Step 5: Solve for x
    x = 778,492,712.84/25,575.66
  6. Step 6: Final answer
    x = 30,438.81

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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.