Home / 25,715.68-38,554.08-20,518.72

Finding the Fourth Proportional to 25,715.68, 38,554.08 and 20,518.72

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Solution

The fourth proportional to 25,715.68, 38,554.08 and 20,518.72 is: 30,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,715.68 : 38,554.08 = 20,518.72 : x
  2. Step 2: Convert to fraction form
    25,715.68/38,554.08 = 20,518.72/x
  3. Step 3: Cross multiply
    25,715.68x = 38,554.08 × 20,518.72
  4. Step 4: Simplify right side
    25,715.68x = 791,080,372.38
  5. Step 5: Solve for x
    x = 791,080,372.38/25,715.68
  6. Step 6: Final answer
    x = 30,762.57

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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.