Home / 14,717.48-20,310.28-8,429.72

Finding the Fourth Proportional to 14,717.48, 20,310.28 and 8,429.72

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Solution

The fourth proportional to 14,717.48, 20,310.28 and 8,429.72 is: 11,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,717.48 : 20,310.28 = 8,429.72 : x
  2. Step 2: Convert to fraction form
    14,717.48/20,310.28 = 8,429.72/x
  3. Step 3: Cross multiply
    14,717.48x = 20,310.28 × 8,429.72
  4. Step 4: Simplify right side
    14,717.48x = 171,209,973.52
  5. Step 5: Solve for x
    x = 171,209,973.52/14,717.48
  6. Step 6: Final answer
    x = 11,633.10

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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.