Home / 20,047.61-30,071.28-15,668.75

Finding the Fourth Proportional to 20,047.61, 30,071.28 and 15,668.75

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Solution

The fourth proportional to 20,047.61, 30,071.28 and 15,668.75 is: 23,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.61 : 30,071.28 = 15,668.75 : x
  2. Step 2: Convert to fraction form
    20,047.61/30,071.28 = 15,668.75/x
  3. Step 3: Cross multiply
    20,047.61x = 30,071.28 × 15,668.75
  4. Step 4: Simplify right side
    20,047.61x = 471,179,368.50
  5. Step 5: Solve for x
    x = 471,179,368.50/20,047.61
  6. Step 6: Final answer
    x = 23,503.02

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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.