Home / 10,929.14-15,080.40-6,212.51

Finding the Fourth Proportional to 10,929.14, 15,080.40 and 6,212.51

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Solution

The fourth proportional to 10,929.14, 15,080.40 and 6,212.51 is: 8,572.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.14 : 15,080.40 = 6,212.51 : x
  2. Step 2: Convert to fraction form
    10,929.14/15,080.40 = 6,212.51/x
  3. Step 3: Cross multiply
    10,929.14x = 15,080.40 × 6,212.51
  4. Step 4: Simplify right side
    10,929.14x = 93,687,060.40
  5. Step 5: Solve for x
    x = 93,687,060.40/10,929.14
  6. Step 6: Final answer
    x = 8,572.23

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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.