Home / 18,920.36-28,399.98-18,220.52

Finding the Fourth Proportional to 18,920.36, 28,399.98 and 18,220.52

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Solution

The fourth proportional to 18,920.36, 28,399.98 and 18,220.52 is: 27,349.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.36 : 28,399.98 = 18,220.52 : x
  2. Step 2: Convert to fraction form
    18,920.36/28,399.98 = 18,220.52/x
  3. Step 3: Cross multiply
    18,920.36x = 28,399.98 × 18,220.52
  4. Step 4: Simplify right side
    18,920.36x = 517,462,403.59
  5. Step 5: Solve for x
    x = 517,462,403.59/18,920.36
  6. Step 6: Final answer
    x = 27,349.50

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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.