Home / 30,963.08-42,746.75-20,383.46

Finding the Fourth Proportional to 30,963.08, 42,746.75 and 20,383.46

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Solution

The fourth proportional to 30,963.08, 42,746.75 and 20,383.46 is: 28,140.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,963.08 : 42,746.75 = 20,383.46 : x
  2. Step 2: Convert to fraction form
    30,963.08/42,746.75 = 20,383.46/x
  3. Step 3: Cross multiply
    30,963.08x = 42,746.75 × 20,383.46
  4. Step 4: Simplify right side
    30,963.08x = 871,326,353.10
  5. Step 5: Solve for x
    x = 871,326,353.10/30,963.08
  6. Step 6: Final answer
    x = 28,140.82

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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.