Home / 30,513.51-42,102.59-18,568.85

Finding the Fourth Proportional to 30,513.51, 42,102.59 and 18,568.85

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Solution

The fourth proportional to 30,513.51, 42,102.59 and 18,568.85 is: 25,621.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,513.51 : 42,102.59 = 18,568.85 : x
  2. Step 2: Convert to fraction form
    30,513.51/42,102.59 = 18,568.85/x
  3. Step 3: Cross multiply
    30,513.51x = 42,102.59 × 18,568.85
  4. Step 4: Simplify right side
    30,513.51x = 781,796,374.96
  5. Step 5: Solve for x
    x = 781,796,374.96/30,513.51
  6. Step 6: Final answer
    x = 25,621.32

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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.