Home / 14,931.34-20,605.24-8,217.20

Finding the Fourth Proportional to 14,931.34, 20,605.24 and 8,217.20

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Solution

The fourth proportional to 14,931.34, 20,605.24 and 8,217.20 is: 11,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,931.34 : 20,605.24 = 8,217.20 : x
  2. Step 2: Convert to fraction form
    14,931.34/20,605.24 = 8,217.20/x
  3. Step 3: Cross multiply
    14,931.34x = 20,605.24 × 8,217.20
  4. Step 4: Simplify right side
    14,931.34x = 169,317,329.79
  5. Step 5: Solve for x
    x = 169,317,329.79/14,931.34
  6. Step 6: Final answer
    x = 11,339.72

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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.