Home / 15,074.40-20,803.23-11,290.89

Finding the Fourth Proportional to 15,074.40, 20,803.23 and 11,290.89

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Solution

The fourth proportional to 15,074.40, 20,803.23 and 11,290.89 is: 15,581.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.40 : 20,803.23 = 11,290.89 : x
  2. Step 2: Convert to fraction form
    15,074.40/20,803.23 = 11,290.89/x
  3. Step 3: Cross multiply
    15,074.40x = 20,803.23 × 11,290.89
  4. Step 4: Simplify right side
    15,074.40x = 234,886,981.57
  5. Step 5: Solve for x
    x = 234,886,981.57/15,074.40
  6. Step 6: Final answer
    x = 15,581.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.