Home / 15,874.23-21,905.24-8,703

Finding the Fourth Proportional to 15,874.23, 21,905.24 and 8,703

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Solution

The fourth proportional to 15,874.23, 21,905.24 and 8,703 is: 12,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,874.23 : 21,905.24 = 8,703 : x
  2. Step 2: Convert to fraction form
    15,874.23/21,905.24 = 8,703/x
  3. Step 3: Cross multiply
    15,874.23x = 21,905.24 × 8,703
  4. Step 4: Simplify right side
    15,874.23x = 190,641,303.72
  5. Step 5: Solve for x
    x = 190,641,303.72/15,874.23
  6. Step 6: Final answer
    x = 12,009.48

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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.