Home / 10,656.04-15,985.58-5,112.16

Finding the Fourth Proportional to 10,656.04, 15,985.58 and 5,112.16

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Solution

The fourth proportional to 10,656.04, 15,985.58 and 5,112.16 is: 7,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.04 : 15,985.58 = 5,112.16 : x
  2. Step 2: Convert to fraction form
    10,656.04/15,985.58 = 5,112.16/x
  3. Step 3: Cross multiply
    10,656.04x = 15,985.58 × 5,112.16
  4. Step 4: Simplify right side
    10,656.04x = 81,720,842.65
  5. Step 5: Solve for x
    x = 81,720,842.65/10,656.04
  6. Step 6: Final answer
    x = 7,668.97

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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.