Home / 11,988.48-17,987.84-6,440.32

Finding the Fourth Proportional to 11,988.48, 17,987.84 and 6,440.32

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Solution

The fourth proportional to 11,988.48, 17,987.84 and 6,440.32 is: 9,663.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.48 : 17,987.84 = 6,440.32 : x
  2. Step 2: Convert to fraction form
    11,988.48/17,987.84 = 6,440.32/x
  3. Step 3: Cross multiply
    11,988.48x = 17,987.84 × 6,440.32
  4. Step 4: Simplify right side
    11,988.48x = 115,847,445.71
  5. Step 5: Solve for x
    x = 115,847,445.71/11,988.48
  6. Step 6: Final answer
    x = 9,663.23

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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.