Home / 30,805.95-42,510.43-17,376.40

Finding the Fourth Proportional to 30,805.95, 42,510.43 and 17,376.40

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Solution

The fourth proportional to 30,805.95, 42,510.43 and 17,376.40 is: 23,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,805.95 : 42,510.43 = 17,376.40 : x
  2. Step 2: Convert to fraction form
    30,805.95/42,510.43 = 17,376.40/x
  3. Step 3: Cross multiply
    30,805.95x = 42,510.43 × 17,376.40
  4. Step 4: Simplify right side
    30,805.95x = 738,678,235.85
  5. Step 5: Solve for x
    x = 738,678,235.85/30,805.95
  6. Step 6: Final answer
    x = 23,978.43

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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.