Home / 15,030.12-20,739.30-8,569.76

Finding the Fourth Proportional to 15,030.12, 20,739.30 and 8,569.76

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Solution

The fourth proportional to 15,030.12, 20,739.30 and 8,569.76 is: 11,824.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.12 : 20,739.30 = 8,569.76 : x
  2. Step 2: Convert to fraction form
    15,030.12/20,739.30 = 8,569.76/x
  3. Step 3: Cross multiply
    15,030.12x = 20,739.30 × 8,569.76
  4. Step 4: Simplify right side
    15,030.12x = 177,730,823.57
  5. Step 5: Solve for x
    x = 177,730,823.57/15,030.12
  6. Step 6: Final answer
    x = 11,824.98

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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.