Home / 9,920.40-13,690.20-5,444.34

Finding the Fourth Proportional to 9,920.40, 13,690.20 and 5,444.34

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Solution

The fourth proportional to 9,920.40, 13,690.20 and 5,444.34 is: 7,513.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.40 : 13,690.20 = 5,444.34 : x
  2. Step 2: Convert to fraction form
    9,920.40/13,690.20 = 5,444.34/x
  3. Step 3: Cross multiply
    9,920.40x = 13,690.20 × 5,444.34
  4. Step 4: Simplify right side
    9,920.40x = 74,534,103.47
  5. Step 5: Solve for x
    x = 74,534,103.47/9,920.40
  6. Step 6: Final answer
    x = 7,513.22

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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.