Home / 15,015.24-20,718.18-9,423.72

Finding the Fourth Proportional to 15,015.24, 20,718.18 and 9,423.72

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Solution

The fourth proportional to 15,015.24, 20,718.18 and 9,423.72 is: 13,002.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.24 : 20,718.18 = 9,423.72 : x
  2. Step 2: Convert to fraction form
    15,015.24/20,718.18 = 9,423.72/x
  3. Step 3: Cross multiply
    15,015.24x = 20,718.18 × 9,423.72
  4. Step 4: Simplify right side
    15,015.24x = 195,242,327.23
  5. Step 5: Solve for x
    x = 195,242,327.23/15,015.24
  6. Step 6: Final answer
    x = 13,002.94

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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.