Home / 12,929.28-19,398.08-5,436.48

Finding the Fourth Proportional to 12,929.28, 19,398.08 and 5,436.48

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Solution

The fourth proportional to 12,929.28, 19,398.08 and 5,436.48 is: 8,156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.28 : 19,398.08 = 5,436.48 : x
  2. Step 2: Convert to fraction form
    12,929.28/19,398.08 = 5,436.48/x
  3. Step 3: Cross multiply
    12,929.28x = 19,398.08 × 5,436.48
  4. Step 4: Simplify right side
    12,929.28x = 105,457,273.96
  5. Step 5: Solve for x
    x = 105,457,273.96/12,929.28
  6. Step 6: Final answer
    x = 8,156.47

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1.5x scale

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.