Home / 30,415.10-41,970.42-16,985.56

Finding the Fourth Proportional to 30,415.10, 41,970.42 and 16,985.56

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Solution

The fourth proportional to 30,415.10, 41,970.42 and 16,985.56 is: 23,438.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,415.10 : 41,970.42 = 16,985.56 : x
  2. Step 2: Convert to fraction form
    30,415.10/41,970.42 = 16,985.56/x
  3. Step 3: Cross multiply
    30,415.10x = 41,970.42 × 16,985.56
  4. Step 4: Simplify right side
    30,415.10x = 712,891,087.14
  5. Step 5: Solve for x
    x = 712,891,087.14/30,415.10
  6. Step 6: Final answer
    x = 23,438.72

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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.