Home / 30,748.11-42,417.89-17,993.40

Finding the Fourth Proportional to 30,748.11, 42,417.89 and 17,993.40

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Solution

The fourth proportional to 30,748.11, 42,417.89 and 17,993.40 is: 24,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,748.11 : 42,417.89 = 17,993.40 : x
  2. Step 2: Convert to fraction form
    30,748.11/42,417.89 = 17,993.40/x
  3. Step 3: Cross multiply
    30,748.11x = 42,417.89 × 17,993.40
  4. Step 4: Simplify right side
    30,748.11x = 763,241,759.87
  5. Step 5: Solve for x
    x = 763,241,759.87/30,748.11
  6. Step 6: Final answer
    x = 24,822.40

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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.