Home / 12,897.30-19,341.82-4,130.13

Finding the Fourth Proportional to 12,897.30, 19,341.82 and 4,130.13

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Solution

The fourth proportional to 12,897.30, 19,341.82 and 4,130.13 is: 6,193.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.30 : 19,341.82 = 4,130.13 : x
  2. Step 2: Convert to fraction form
    12,897.30/19,341.82 = 4,130.13/x
  3. Step 3: Cross multiply
    12,897.30x = 19,341.82 × 4,130.13
  4. Step 4: Simplify right side
    12,897.30x = 79,884,231.04
  5. Step 5: Solve for x
    x = 79,884,231.04/12,897.30
  6. Step 6: Final answer
    x = 6,193.87

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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.