Home / 20,654.48-31,094.12-18,817.40

Finding the Fourth Proportional to 20,654.48, 31,094.12 and 18,817.40

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Solution

The fourth proportional to 20,654.48, 31,094.12 and 18,817.40 is: 28,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.48 : 31,094.12 = 18,817.40 : x
  2. Step 2: Convert to fraction form
    20,654.48/31,094.12 = 18,817.40/x
  3. Step 3: Cross multiply
    20,654.48x = 31,094.12 × 18,817.40
  4. Step 4: Simplify right side
    20,654.48x = 585,110,244.13
  5. Step 5: Solve for x
    x = 585,110,244.13/20,654.48
  6. Step 6: Final answer
    x = 28,328.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.