Home / 15,144.91-20,908.18-10,621.48

Finding the Fourth Proportional to 15,144.91, 20,908.18 and 10,621.48

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Solution

The fourth proportional to 15,144.91, 20,908.18 and 10,621.48 is: 14,663.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.91 : 20,908.18 = 10,621.48 : x
  2. Step 2: Convert to fraction form
    15,144.91/20,908.18 = 10,621.48/x
  3. Step 3: Cross multiply
    15,144.91x = 20,908.18 × 10,621.48
  4. Step 4: Simplify right side
    15,144.91x = 222,075,756.17
  5. Step 5: Solve for x
    x = 222,075,756.17/15,144.91
  6. Step 6: Final answer
    x = 14,663.39

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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.