Home / 19,689.30-29,555.55-12,302.10

Finding the Fourth Proportional to 19,689.30, 29,555.55 and 12,302.10

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Solution

The fourth proportional to 19,689.30, 29,555.55 and 12,302.10 is: 18,466.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.30 : 29,555.55 = 12,302.10 : x
  2. Step 2: Convert to fraction form
    19,689.30/29,555.55 = 12,302.10/x
  3. Step 3: Cross multiply
    19,689.30x = 29,555.55 × 12,302.10
  4. Step 4: Simplify right side
    19,689.30x = 363,595,331.66
  5. Step 5: Solve for x
    x = 363,595,331.66/19,689.30
  6. Step 6: Final answer
    x = 18,466.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.