Home / 30,813.30-42,522.30-16,666.20

Finding the Fourth Proportional to 30,813.30, 42,522.30 and 16,666.20

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Solution

The fourth proportional to 30,813.30, 42,522.30 and 16,666.20 is: 22,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.30 : 42,522.30 = 16,666.20 : x
  2. Step 2: Convert to fraction form
    30,813.30/42,522.30 = 16,666.20/x
  3. Step 3: Cross multiply
    30,813.30x = 42,522.30 × 16,666.20
  4. Step 4: Simplify right side
    30,813.30x = 708,685,156.26
  5. Step 5: Solve for x
    x = 708,685,156.26/30,813.30
  6. Step 6: Final answer
    x = 22,999.33

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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.