Home / 30,605.70-42,240.10-17,177.76

Finding the Fourth Proportional to 30,605.70, 42,240.10 and 17,177.76

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Solution

The fourth proportional to 30,605.70, 42,240.10 and 17,177.76 is: 23,707.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,605.70 : 42,240.10 = 17,177.76 : x
  2. Step 2: Convert to fraction form
    30,605.70/42,240.10 = 17,177.76/x
  3. Step 3: Cross multiply
    30,605.70x = 42,240.10 × 17,177.76
  4. Step 4: Simplify right side
    30,605.70x = 725,590,300.18
  5. Step 5: Solve for x
    x = 725,590,300.18/30,605.70
  6. Step 6: Final answer
    x = 23,707.69

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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.