Home / 15,273.90-21,076.98-8,985.06

Finding the Fourth Proportional to 15,273.90, 21,076.98 and 8,985.06

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Solution

The fourth proportional to 15,273.90, 21,076.98 and 8,985.06 is: 12,398.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,273.90 : 21,076.98 = 8,985.06 : x
  2. Step 2: Convert to fraction form
    15,273.90/21,076.98 = 8,985.06/x
  3. Step 3: Cross multiply
    15,273.90x = 21,076.98 × 8,985.06
  4. Step 4: Simplify right side
    15,273.90x = 189,377,929.92
  5. Step 5: Solve for x
    x = 189,377,929.92/15,273.90
  6. Step 6: Final answer
    x = 12,398.79

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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.