Home / 30,899.12-42,640.65-16,751.96

Finding the Fourth Proportional to 30,899.12, 42,640.65 and 16,751.96

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Solution

The fourth proportional to 30,899.12, 42,640.65 and 16,751.96 is: 23,117.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899.12 : 42,640.65 = 16,751.96 : x
  2. Step 2: Convert to fraction form
    30,899.12/42,640.65 = 16,751.96/x
  3. Step 3: Cross multiply
    30,899.12x = 42,640.65 × 16,751.96
  4. Step 4: Simplify right side
    30,899.12x = 714,314,696.84
  5. Step 5: Solve for x
    x = 714,314,696.84/30,899.12
  6. Step 6: Final answer
    x = 23,117.64

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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.