Home / 15,363.89-21,200.82-8,557.40

Finding the Fourth Proportional to 15,363.89, 21,200.82 and 8,557.40

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Solution

The fourth proportional to 15,363.89, 21,200.82 and 8,557.40 is: 11,808.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.89 : 21,200.82 = 8,557.40 : x
  2. Step 2: Convert to fraction form
    15,363.89/21,200.82 = 8,557.40/x
  3. Step 3: Cross multiply
    15,363.89x = 21,200.82 × 8,557.40
  4. Step 4: Simplify right side
    15,363.89x = 181,423,791.06
  5. Step 5: Solve for x
    x = 181,423,791.06/15,363.89
  6. Step 6: Final answer
    x = 11,808.46

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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.