Home / 43,253.12-64,879.56-10,421.12

Finding the Fourth Proportional to 43,253.12, 64,879.56 and 10,421.12

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Solution

The fourth proportional to 43,253.12, 64,879.56 and 10,421.12 is: 15,631.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,253.12 : 64,879.56 = 10,421.12 : x
  2. Step 2: Convert to fraction form
    43,253.12/64,879.56 = 10,421.12/x
  3. Step 3: Cross multiply
    43,253.12x = 64,879.56 × 10,421.12
  4. Step 4: Simplify right side
    43,253.12x = 676,117,680.31
  5. Step 5: Solve for x
    x = 676,117,680.31/43,253.12
  6. Step 6: Final answer
    x = 15,631.65

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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.