Home / 15,144.78-20,854.86-10,888.35

Finding the Fourth Proportional to 15,144.78, 20,854.86 and 10,888.35

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Solution

The fourth proportional to 15,144.78, 20,854.86 and 10,888.35 is: 14,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.78 : 20,854.86 = 10,888.35 : x
  2. Step 2: Convert to fraction form
    15,144.78/20,854.86 = 10,888.35/x
  3. Step 3: Cross multiply
    15,144.78x = 20,854.86 × 10,888.35
  4. Step 4: Simplify right side
    15,144.78x = 227,075,014.88
  5. Step 5: Solve for x
    x = 227,075,014.88/15,144.78
  6. Step 6: Final answer
    x = 14,993.62

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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.