Home / 30,961.99-42,726.40-16,814.53

Finding the Fourth Proportional to 30,961.99, 42,726.40 and 16,814.53

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Solution

The fourth proportional to 30,961.99, 42,726.40 and 16,814.53 is: 23,203.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,961.99 : 42,726.40 = 16,814.53 : x
  2. Step 2: Convert to fraction form
    30,961.99/42,726.40 = 16,814.53/x
  3. Step 3: Cross multiply
    30,961.99x = 42,726.40 × 16,814.53
  4. Step 4: Simplify right side
    30,961.99x = 718,424,334.59
  5. Step 5: Solve for x
    x = 718,424,334.59/30,961.99
  6. Step 6: Final answer
    x = 23,203.43

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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.