Home / 30,810.45-42,518.83-17,381.66

Finding the Fourth Proportional to 30,810.45, 42,518.83 and 17,381.66

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Solution

The fourth proportional to 30,810.45, 42,518.83 and 17,381.66 is: 23,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.45 : 42,518.83 = 17,381.66 : x
  2. Step 2: Convert to fraction form
    30,810.45/42,518.83 = 17,381.66/x
  3. Step 3: Cross multiply
    30,810.45x = 42,518.83 × 17,381.66
  4. Step 4: Simplify right side
    30,810.45x = 739,047,846.66
  5. Step 5: Solve for x
    x = 739,047,846.66/30,810.45
  6. Step 6: Final answer
    x = 23,986.92

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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.