Home / 15,554.78-21,463.19-8,929.50

Finding the Fourth Proportional to 15,554.78, 21,463.19 and 8,929.50

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Solution

The fourth proportional to 15,554.78, 21,463.19 and 8,929.50 is: 12,321.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.78 : 21,463.19 = 8,929.50 : x
  2. Step 2: Convert to fraction form
    15,554.78/21,463.19 = 8,929.50/x
  3. Step 3: Cross multiply
    15,554.78x = 21,463.19 × 8,929.50
  4. Step 4: Simplify right side
    15,554.78x = 191,655,555.11
  5. Step 5: Solve for x
    x = 191,655,555.11/15,554.78
  6. Step 6: Final answer
    x = 12,321.33

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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.