Home / 28,213.31-42,320.79-12,410.14

Finding the Fourth Proportional to 28,213.31, 42,320.79 and 12,410.14

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Solution

The fourth proportional to 28,213.31, 42,320.79 and 12,410.14 is: 18,615.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.31 : 42,320.79 = 12,410.14 : x
  2. Step 2: Convert to fraction form
    28,213.31/42,320.79 = 12,410.14/x
  3. Step 3: Cross multiply
    28,213.31x = 42,320.79 × 12,410.14
  4. Step 4: Simplify right side
    28,213.31x = 525,206,928.81
  5. Step 5: Solve for x
    x = 525,206,928.81/28,213.31
  6. Step 6: Final answer
    x = 18,615.57

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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.