Home / 11,347.31-15,657-6,630.68

Finding the Fourth Proportional to 11,347.31, 15,657 and 6,630.68

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Solution

The fourth proportional to 11,347.31, 15,657 and 6,630.68 is: 9,149.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,347.31 : 15,657 = 6,630.68 : x
  2. Step 2: Convert to fraction form
    11,347.31/15,657 = 6,630.68/x
  3. Step 3: Cross multiply
    11,347.31x = 15,657 × 6,630.68
  4. Step 4: Simplify right side
    11,347.31x = 103,816,556.76
  5. Step 5: Solve for x
    x = 103,816,556.76/11,347.31
  6. Step 6: Final answer
    x = 9,149.00

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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.