Home / 28,120.48-38,807.04-15,545.68

Finding the Fourth Proportional to 28,120.48, 38,807.04 and 15,545.68

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Solution

The fourth proportional to 28,120.48, 38,807.04 and 15,545.68 is: 21,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.48 : 38,807.04 = 15,545.68 : x
  2. Step 2: Convert to fraction form
    28,120.48/38,807.04 = 15,545.68/x
  3. Step 3: Cross multiply
    28,120.48x = 38,807.04 × 15,545.68
  4. Step 4: Simplify right side
    28,120.48x = 603,281,825.59
  5. Step 5: Solve for x
    x = 603,281,825.59/28,120.48
  6. Step 6: Final answer
    x = 21,453.47

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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.