Home / 20,276.48-30,419.40-8,590.16

Finding the Fourth Proportional to 20,276.48, 30,419.40 and 8,590.16

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Solution

The fourth proportional to 20,276.48, 30,419.40 and 8,590.16 is: 12,887.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.48 : 30,419.40 = 8,590.16 : x
  2. Step 2: Convert to fraction form
    20,276.48/30,419.40 = 8,590.16/x
  3. Step 3: Cross multiply
    20,276.48x = 30,419.40 × 8,590.16
  4. Step 4: Simplify right side
    20,276.48x = 261,307,513.10
  5. Step 5: Solve for x
    x = 261,307,513.10/20,276.48
  6. Step 6: Final answer
    x = 12,887.22

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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.