Home / 30,949.95-42,710.80-16,802.79

Finding the Fourth Proportional to 30,949.95, 42,710.80 and 16,802.79

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Solution

The fourth proportional to 30,949.95, 42,710.80 and 16,802.79 is: 23,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,949.95 : 42,710.80 = 16,802.79 : x
  2. Step 2: Convert to fraction form
    30,949.95/42,710.80 = 16,802.79/x
  3. Step 3: Cross multiply
    30,949.95x = 42,710.80 × 16,802.79
  4. Step 4: Simplify right side
    30,949.95x = 717,660,603.13
  5. Step 5: Solve for x
    x = 717,660,603.13/30,949.95
  6. Step 6: Final answer
    x = 23,187.78

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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.