Home / 15,123.49-20,873.15-8,749.33

Finding the Fourth Proportional to 15,123.49, 20,873.15 and 8,749.33

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Solution

The fourth proportional to 15,123.49, 20,873.15 and 8,749.33 is: 12,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.49 : 20,873.15 = 8,749.33 : x
  2. Step 2: Convert to fraction form
    15,123.49/20,873.15 = 8,749.33/x
  3. Step 3: Cross multiply
    15,123.49x = 20,873.15 × 8,749.33
  4. Step 4: Simplify right side
    15,123.49x = 182,626,077.49
  5. Step 5: Solve for x
    x = 182,626,077.49/15,123.49
  6. Step 6: Final answer
    x = 12,075.66

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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.