Home / 12,421.08-17,141.16-7,116.24

Finding the Fourth Proportional to 12,421.08, 17,141.16 and 7,116.24

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Solution

The fourth proportional to 12,421.08, 17,141.16 and 7,116.24 is: 9,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.08 : 17,141.16 = 7,116.24 : x
  2. Step 2: Convert to fraction form
    12,421.08/17,141.16 = 7,116.24/x
  3. Step 3: Cross multiply
    12,421.08x = 17,141.16 × 7,116.24
  4. Step 4: Simplify right side
    12,421.08x = 121,980,608.44
  5. Step 5: Solve for x
    x = 121,980,608.44/12,421.08
  6. Step 6: Final answer
    x = 9,820.45

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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.