Home / 30,981.06-42,751.80-16,833.60

Finding the Fourth Proportional to 30,981.06, 42,751.80 and 16,833.60

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Solution

The fourth proportional to 30,981.06, 42,751.80 and 16,833.60 is: 23,229.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.06 : 42,751.80 = 16,833.60 : x
  2. Step 2: Convert to fraction form
    30,981.06/42,751.80 = 16,833.60/x
  3. Step 3: Cross multiply
    30,981.06x = 42,751.80 × 16,833.60
  4. Step 4: Simplify right side
    30,981.06x = 719,666,700.48
  5. Step 5: Solve for x
    x = 719,666,700.48/30,981.06
  6. Step 6: Final answer
    x = 23,229.25

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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.