Home / 15,362.49-21,194.43-8,987.05

Finding the Fourth Proportional to 15,362.49, 21,194.43 and 8,987.05

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Solution

The fourth proportional to 15,362.49, 21,194.43 and 8,987.05 is: 12,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.49 : 21,194.43 = 8,987.05 : x
  2. Step 2: Convert to fraction form
    15,362.49/21,194.43 = 8,987.05/x
  3. Step 3: Cross multiply
    15,362.49x = 21,194.43 × 8,987.05
  4. Step 4: Simplify right side
    15,362.49x = 190,475,402.13
  5. Step 5: Solve for x
    x = 190,475,402.13/15,362.49
  6. Step 6: Final answer
    x = 12,398.73

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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.