Home / 14,678.28-20,256.48-8,390.52

Finding the Fourth Proportional to 14,678.28, 20,256.48 and 8,390.52

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Solution

The fourth proportional to 14,678.28, 20,256.48 and 8,390.52 is: 11,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,678.28 : 20,256.48 = 8,390.52 : x
  2. Step 2: Convert to fraction form
    14,678.28/20,256.48 = 8,390.52/x
  3. Step 3: Cross multiply
    14,678.28x = 20,256.48 × 8,390.52
  4. Step 4: Simplify right side
    14,678.28x = 169,962,400.57
  5. Step 5: Solve for x
    x = 169,962,400.57/14,678.28
  6. Step 6: Final answer
    x = 11,579.18

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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.