Home / 11,478.51-15,835.77-7,001.91

Finding the Fourth Proportional to 11,478.51, 15,835.77 and 7,001.91

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Solution

The fourth proportional to 11,478.51, 15,835.77 and 7,001.91 is: 9,659.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,478.51 : 15,835.77 = 7,001.91 : x
  2. Step 2: Convert to fraction form
    11,478.51/15,835.77 = 7,001.91/x
  3. Step 3: Cross multiply
    11,478.51x = 15,835.77 × 7,001.91
  4. Step 4: Simplify right side
    11,478.51x = 110,880,636.32
  5. Step 5: Solve for x
    x = 110,880,636.32/11,478.51
  6. Step 6: Final answer
    x = 9,659.85

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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.