Home / 12,365.40-17,063.64-6,987.72

Finding the Fourth Proportional to 12,365.40, 17,063.64 and 6,987.72

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Solution

The fourth proportional to 12,365.40, 17,063.64 and 6,987.72 is: 9,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.40 : 17,063.64 = 6,987.72 : x
  2. Step 2: Convert to fraction form
    12,365.40/17,063.64 = 6,987.72/x
  3. Step 3: Cross multiply
    12,365.40x = 17,063.64 × 6,987.72
  4. Step 4: Simplify right side
    12,365.40x = 119,235,938.50
  5. Step 5: Solve for x
    x = 119,235,938.50/12,365.40
  6. Step 6: Final answer
    x = 9,642.71

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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.