Home / 30,765.12-42,448.39-17,336.40

Finding the Fourth Proportional to 30,765.12, 42,448.39 and 17,336.40

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Solution

The fourth proportional to 30,765.12, 42,448.39 and 17,336.40 is: 23,920.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.12 : 42,448.39 = 17,336.40 : x
  2. Step 2: Convert to fraction form
    30,765.12/42,448.39 = 17,336.40/x
  3. Step 3: Cross multiply
    30,765.12x = 42,448.39 × 17,336.40
  4. Step 4: Simplify right side
    30,765.12x = 735,902,268.40
  5. Step 5: Solve for x
    x = 735,902,268.40/30,765.12
  6. Step 6: Final answer
    x = 23,920.02

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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.