Home / 30,855.12-42,580.10-16,707.98

Finding the Fourth Proportional to 30,855.12, 42,580.10 and 16,707.98

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Solution

The fourth proportional to 30,855.12, 42,580.10 and 16,707.98 is: 23,057.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.12 : 42,580.10 = 16,707.98 : x
  2. Step 2: Convert to fraction form
    30,855.12/42,580.10 = 16,707.98/x
  3. Step 3: Cross multiply
    30,855.12x = 42,580.10 × 16,707.98
  4. Step 4: Simplify right side
    30,855.12x = 711,427,459.20
  5. Step 5: Solve for x
    x = 711,427,459.20/30,855.12
  6. Step 6: Final answer
    x = 23,057.03

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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.