Home / 13,985.40-19,300.30-8,018.20

Finding the Fourth Proportional to 13,985.40, 19,300.30 and 8,018.20

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Solution

The fourth proportional to 13,985.40, 19,300.30 and 8,018.20 is: 11,065.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.40 : 19,300.30 = 8,018.20 : x
  2. Step 2: Convert to fraction form
    13,985.40/19,300.30 = 8,018.20/x
  3. Step 3: Cross multiply
    13,985.40x = 19,300.30 × 8,018.20
  4. Step 4: Simplify right side
    13,985.40x = 154,753,665.46
  5. Step 5: Solve for x
    x = 154,753,665.46/13,985.40
  6. Step 6: Final answer
    x = 11,065.37

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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.