Home / 15,331.84-21,158.70-9,362.55

Finding the Fourth Proportional to 15,331.84, 21,158.70 and 9,362.55

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Solution

The fourth proportional to 15,331.84, 21,158.70 and 9,362.55 is: 12,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331.84 : 21,158.70 = 9,362.55 : x
  2. Step 2: Convert to fraction form
    15,331.84/21,158.70 = 9,362.55/x
  3. Step 3: Cross multiply
    15,331.84x = 21,158.70 × 9,362.55
  4. Step 4: Simplify right side
    15,331.84x = 198,099,234.08
  5. Step 5: Solve for x
    x = 198,099,234.08/15,331.84
  6. Step 6: Final answer
    x = 12,920.77

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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.