Home / 28,390.06-42,585.09-12,812.14

Finding the Fourth Proportional to 28,390.06, 42,585.09 and 12,812.14

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Solution

The fourth proportional to 28,390.06, 42,585.09 and 12,812.14 is: 19,218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.06 : 42,585.09 = 12,812.14 : x
  2. Step 2: Convert to fraction form
    28,390.06/42,585.09 = 12,812.14/x
  3. Step 3: Cross multiply
    28,390.06x = 42,585.09 × 12,812.14
  4. Step 4: Simplify right side
    28,390.06x = 545,606,134.99
  5. Step 5: Solve for x
    x = 545,606,134.99/28,390.06
  6. Step 6: Final answer
    x = 19,218.21

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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.