Home / 15,048.72-20,751.12-12,818.16

Finding the Fourth Proportional to 15,048.72, 20,751.12 and 12,818.16

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Solution

The fourth proportional to 15,048.72, 20,751.12 and 12,818.16 is: 17,675.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.72 : 20,751.12 = 12,818.16 : x
  2. Step 2: Convert to fraction form
    15,048.72/20,751.12 = 12,818.16/x
  3. Step 3: Cross multiply
    15,048.72x = 20,751.12 × 12,818.16
  4. Step 4: Simplify right side
    15,048.72x = 265,991,176.34
  5. Step 5: Solve for x
    x = 265,991,176.34/15,048.72
  6. Step 6: Final answer
    x = 17,675.34

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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.