Home / 15,388.50-21,236.13-8,764.50

Finding the Fourth Proportional to 15,388.50, 21,236.13 and 8,764.50

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Solution

The fourth proportional to 15,388.50, 21,236.13 and 8,764.50 is: 12,095.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.50 : 21,236.13 = 8,764.50 : x
  2. Step 2: Convert to fraction form
    15,388.50/21,236.13 = 8,764.50/x
  3. Step 3: Cross multiply
    15,388.50x = 21,236.13 × 8,764.50
  4. Step 4: Simplify right side
    15,388.50x = 186,124,061.39
  5. Step 5: Solve for x
    x = 186,124,061.39/15,388.50
  6. Step 6: Final answer
    x = 12,095.01

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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.