Home / 30,638.97-42,280.16-17,210.79

Finding the Fourth Proportional to 30,638.97, 42,280.16 and 17,210.79

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Solution

The fourth proportional to 30,638.97, 42,280.16 and 17,210.79 is: 23,749.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.97 : 42,280.16 = 17,210.79 : x
  2. Step 2: Convert to fraction form
    30,638.97/42,280.16 = 17,210.79/x
  3. Step 3: Cross multiply
    30,638.97x = 42,280.16 × 17,210.79
  4. Step 4: Simplify right side
    30,638.97x = 727,674,868.87
  5. Step 5: Solve for x
    x = 727,674,868.87/30,638.97
  6. Step 6: Final answer
    x = 23,749.98

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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.