Home / 30,763.12-42,456.10-18,015.51

Finding the Fourth Proportional to 30,763.12, 42,456.10 and 18,015.51

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Solution

The fourth proportional to 30,763.12, 42,456.10 and 18,015.51 is: 24,863.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,763.12 : 42,456.10 = 18,015.51 : x
  2. Step 2: Convert to fraction form
    30,763.12/42,456.10 = 18,015.51/x
  3. Step 3: Cross multiply
    30,763.12x = 42,456.10 × 18,015.51
  4. Step 4: Simplify right side
    30,763.12x = 764,868,294.11
  5. Step 5: Solve for x
    x = 764,868,294.11/30,763.12
  6. Step 6: Final answer
    x = 24,863.16

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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.