Home / 30,603.59-42,232-16,991.34

Finding the Fourth Proportional to 30,603.59, 42,232 and 16,991.34

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Solution

The fourth proportional to 30,603.59, 42,232 and 16,991.34 is: 23,447.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,603.59 : 42,232 = 16,991.34 : x
  2. Step 2: Convert to fraction form
    30,603.59/42,232 = 16,991.34/x
  3. Step 3: Cross multiply
    30,603.59x = 42,232 × 16,991.34
  4. Step 4: Simplify right side
    30,603.59x = 717,578,270.88
  5. Step 5: Solve for x
    x = 717,578,270.88/30,603.59
  6. Step 6: Final answer
    x = 23,447.52

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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.