Home / 9,911.40-13,677.69-5,374.20

Finding the Fourth Proportional to 9,911.40, 13,677.69 and 5,374.20

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Solution

The fourth proportional to 9,911.40, 13,677.69 and 5,374.20 is: 7,416.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.40 : 13,677.69 = 5,374.20 : x
  2. Step 2: Convert to fraction form
    9,911.40/13,677.69 = 5,374.20/x
  3. Step 3: Cross multiply
    9,911.40x = 13,677.69 × 5,374.20
  4. Step 4: Simplify right side
    9,911.40x = 73,506,641.60
  5. Step 5: Solve for x
    x = 73,506,641.60/9,911.40
  6. Step 6: Final answer
    x = 7,416.37

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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.