Home / 30,805.18-42,511.16-16,658.02

Finding the Fourth Proportional to 30,805.18, 42,511.16 and 16,658.02

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Solution

The fourth proportional to 30,805.18, 42,511.16 and 16,658.02 is: 22,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,805.18 : 42,511.16 = 16,658.02 : x
  2. Step 2: Convert to fraction form
    30,805.18/42,511.16 = 16,658.02/x
  3. Step 3: Cross multiply
    30,805.18x = 42,511.16 × 16,658.02
  4. Step 4: Simplify right side
    30,805.18x = 708,151,753.50
  5. Step 5: Solve for x
    x = 708,151,753.50/30,805.18
  6. Step 6: Final answer
    x = 22,988.07

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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.