Home / 20,259.36-30,399.71-10,398.65

Finding the Fourth Proportional to 20,259.36, 30,399.71 and 10,398.65

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Solution

The fourth proportional to 20,259.36, 30,399.71 and 10,398.65 is: 15,603.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.36 : 30,399.71 = 10,398.65 : x
  2. Step 2: Convert to fraction form
    20,259.36/30,399.71 = 10,398.65/x
  3. Step 3: Cross multiply
    20,259.36x = 30,399.71 × 10,398.65
  4. Step 4: Simplify right side
    20,259.36x = 316,115,740.40
  5. Step 5: Solve for x
    x = 316,115,740.40/20,259.36
  6. Step 6: Final answer
    x = 15,603.44

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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.