Home / 10,720.93-16,106.12-10,278.07

Finding the Fourth Proportional to 10,720.93, 16,106.12 and 10,278.07

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Solution

The fourth proportional to 10,720.93, 16,106.12 and 10,278.07 is: 15,440.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.93 : 16,106.12 = 10,278.07 : x
  2. Step 2: Convert to fraction form
    10,720.93/16,106.12 = 10,278.07/x
  3. Step 3: Cross multiply
    10,720.93x = 16,106.12 × 10,278.07
  4. Step 4: Simplify right side
    10,720.93x = 165,539,828.79
  5. Step 5: Solve for x
    x = 165,539,828.79/10,720.93
  6. Step 6: Final answer
    x = 15,440.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.