Home / 28,386.81-42,568.88-13,584.87

Finding the Fourth Proportional to 28,386.81, 42,568.88 and 13,584.87

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Solution

The fourth proportional to 28,386.81, 42,568.88 and 13,584.87 is: 20,371.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.81 : 42,568.88 = 13,584.87 : x
  2. Step 2: Convert to fraction form
    28,386.81/42,568.88 = 13,584.87/x
  3. Step 3: Cross multiply
    28,386.81x = 42,568.88 × 13,584.87
  4. Step 4: Simplify right side
    28,386.81x = 578,292,632.92
  5. Step 5: Solve for x
    x = 578,292,632.92/28,386.81
  6. Step 6: Final answer
    x = 20,371.88

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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.