Home / 10,921.31-15,071.46-6,384.26

Finding the Fourth Proportional to 10,921.31, 15,071.46 and 6,384.26

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Solution

The fourth proportional to 10,921.31, 15,071.46 and 6,384.26 is: 8,810.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.31 : 15,071.46 = 6,384.26 : x
  2. Step 2: Convert to fraction form
    10,921.31/15,071.46 = 6,384.26/x
  3. Step 3: Cross multiply
    10,921.31x = 15,071.46 × 6,384.26
  4. Step 4: Simplify right side
    10,921.31x = 96,220,043.86
  5. Step 5: Solve for x
    x = 96,220,043.86/10,921.31
  6. Step 6: Final answer
    x = 8,810.30

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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.