Home / 28,371.84-39,154.12-15,626.36

Finding the Fourth Proportional to 28,371.84, 39,154.12 and 15,626.36

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Solution

The fourth proportional to 28,371.84, 39,154.12 and 15,626.36 is: 21,564.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.84 : 39,154.12 = 15,626.36 : x
  2. Step 2: Convert to fraction form
    28,371.84/39,154.12 = 15,626.36/x
  3. Step 3: Cross multiply
    28,371.84x = 39,154.12 × 15,626.36
  4. Step 4: Simplify right side
    28,371.84x = 611,836,374.60
  5. Step 5: Solve for x
    x = 611,836,374.60/28,371.84
  6. Step 6: Final answer
    x = 21,564.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.