Home / 28,724.10-39,639.36-16,148.04

Finding the Fourth Proportional to 28,724.10, 39,639.36 and 16,148.04

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Solution

The fourth proportional to 28,724.10, 39,639.36 and 16,148.04 is: 22,284.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.10 : 39,639.36 = 16,148.04 : x
  2. Step 2: Convert to fraction form
    28,724.10/39,639.36 = 16,148.04/x
  3. Step 3: Cross multiply
    28,724.10x = 39,639.36 × 16,148.04
  4. Step 4: Simplify right side
    28,724.10x = 640,097,970.85
  5. Step 5: Solve for x
    x = 640,097,970.85/28,724.10
  6. Step 6: Final answer
    x = 22,284.35

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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.