Home / 12,897.36-19,347.12-4,579.20

Finding the Fourth Proportional to 12,897.36, 19,347.12 and 4,579.20

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Solution

The fourth proportional to 12,897.36, 19,347.12 and 4,579.20 is: 6,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.36 : 19,347.12 = 4,579.20 : x
  2. Step 2: Convert to fraction form
    12,897.36/19,347.12 = 4,579.20/x
  3. Step 3: Cross multiply
    12,897.36x = 19,347.12 × 4,579.20
  4. Step 4: Simplify right side
    12,897.36x = 88,594,331.90
  5. Step 5: Solve for x
    x = 88,594,331.90/12,897.36
  6. Step 6: Final answer
    x = 6,869.18

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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.