Home / 30,957.26-42,720.80-16,810.10

Finding the Fourth Proportional to 30,957.26, 42,720.80 and 16,810.10

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Solution

The fourth proportional to 30,957.26, 42,720.80 and 16,810.10 is: 23,197.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,957.26 : 42,720.80 = 16,810.10 : x
  2. Step 2: Convert to fraction form
    30,957.26/42,720.80 = 16,810.10/x
  3. Step 3: Cross multiply
    30,957.26x = 42,720.80 × 16,810.10
  4. Step 4: Simplify right side
    30,957.26x = 718,140,920.08
  5. Step 5: Solve for x
    x = 718,140,920.08/30,957.26
  6. Step 6: Final answer
    x = 23,197.82

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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.