Home / 13,918.28-20,878.40-5,598.34

Finding the Fourth Proportional to 13,918.28, 20,878.40 and 5,598.34

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Solution

The fourth proportional to 13,918.28, 20,878.40 and 5,598.34 is: 8,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.28 : 20,878.40 = 5,598.34 : x
  2. Step 2: Convert to fraction form
    13,918.28/20,878.40 = 5,598.34/x
  3. Step 3: Cross multiply
    13,918.28x = 20,878.40 × 5,598.34
  4. Step 4: Simplify right side
    13,918.28x = 116,884,353.86
  5. Step 5: Solve for x
    x = 116,884,353.86/13,918.28
  6. Step 6: Final answer
    x = 8,397.90

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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.