Home / 30,969.86-42,736.80-16,822.66

Finding the Fourth Proportional to 30,969.86, 42,736.80 and 16,822.66

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Solution

The fourth proportional to 30,969.86, 42,736.80 and 16,822.66 is: 23,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.86 : 42,736.80 = 16,822.66 : x
  2. Step 2: Convert to fraction form
    30,969.86/42,736.80 = 16,822.66/x
  3. Step 3: Cross multiply
    30,969.86x = 42,736.80 × 16,822.66
  4. Step 4: Simplify right side
    30,969.86x = 718,946,655.89
  5. Step 5: Solve for x
    x = 718,946,655.89/30,969.86
  6. Step 6: Final answer
    x = 23,214.40

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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.