Home / 14,258.60-21,387.90-13,221.80

Finding the Fourth Proportional to 14,258.60, 21,387.90 and 13,221.80

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Solution

The fourth proportional to 14,258.60, 21,387.90 and 13,221.80 is: 19,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,258.60 : 21,387.90 = 13,221.80 : x
  2. Step 2: Convert to fraction form
    14,258.60/21,387.90 = 13,221.80/x
  3. Step 3: Cross multiply
    14,258.60x = 21,387.90 × 13,221.80
  4. Step 4: Simplify right side
    14,258.60x = 282,786,536.22
  5. Step 5: Solve for x
    x = 282,786,536.22/14,258.60
  6. Step 6: Final answer
    x = 19,832.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.