Home / 28,426.14-39,220.20-18,355.01

Finding the Fourth Proportional to 28,426.14, 39,220.20 and 18,355.01

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Solution

The fourth proportional to 28,426.14, 39,220.20 and 18,355.01 is: 25,324.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.14 : 39,220.20 = 18,355.01 : x
  2. Step 2: Convert to fraction form
    28,426.14/39,220.20 = 18,355.01/x
  3. Step 3: Cross multiply
    28,426.14x = 39,220.20 × 18,355.01
  4. Step 4: Simplify right side
    28,426.14x = 719,886,967.10
  5. Step 5: Solve for x
    x = 719,886,967.10/28,426.14
  6. Step 6: Final answer
    x = 25,324.82

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Half scale
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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.