Home / 20,579.74-28,400.56-12,617.34

Finding the Fourth Proportional to 20,579.74, 28,400.56 and 12,617.34

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Solution

The fourth proportional to 20,579.74, 28,400.56 and 12,617.34 is: 17,412.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.74 : 28,400.56 = 12,617.34 : x
  2. Step 2: Convert to fraction form
    20,579.74/28,400.56 = 12,617.34/x
  3. Step 3: Cross multiply
    20,579.74x = 28,400.56 × 12,617.34
  4. Step 4: Simplify right side
    20,579.74x = 358,339,521.71
  5. Step 5: Solve for x
    x = 358,339,521.71/20,579.74
  6. Step 6: Final answer
    x = 17,412.25

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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.