Home / 15,740.72-21,717.31-8,933.63

Finding the Fourth Proportional to 15,740.72, 21,717.31 and 8,933.63

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Solution

The fourth proportional to 15,740.72, 21,717.31 and 8,933.63 is: 12,325.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.72 : 21,717.31 = 8,933.63 : x
  2. Step 2: Convert to fraction form
    15,740.72/21,717.31 = 8,933.63/x
  3. Step 3: Cross multiply
    15,740.72x = 21,717.31 × 8,933.63
  4. Step 4: Simplify right side
    15,740.72x = 194,014,281.21
  5. Step 5: Solve for x
    x = 194,014,281.21/15,740.72
  6. Step 6: Final answer
    x = 12,325.63

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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.