Home / 13,309.08-18,363.18-7,719

Finding the Fourth Proportional to 13,309.08, 18,363.18 and 7,719

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Solution

The fourth proportional to 13,309.08, 18,363.18 and 7,719 is: 10,650.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.08 : 18,363.18 = 7,719 : x
  2. Step 2: Convert to fraction form
    13,309.08/18,363.18 = 7,719/x
  3. Step 3: Cross multiply
    13,309.08x = 18,363.18 × 7,719
  4. Step 4: Simplify right side
    13,309.08x = 141,745,386.42
  5. Step 5: Solve for x
    x = 141,745,386.42/13,309.08
  6. Step 6: Final answer
    x = 10,650.28

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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.