Home / 13,363.36-18,441.28-7,774.40

Finding the Fourth Proportional to 13,363.36, 18,441.28 and 7,774.40

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Solution

The fourth proportional to 13,363.36, 18,441.28 and 7,774.40 is: 10,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.36 : 18,441.28 = 7,774.40 : x
  2. Step 2: Convert to fraction form
    13,363.36/18,441.28 = 7,774.40/x
  3. Step 3: Cross multiply
    13,363.36x = 18,441.28 × 7,774.40
  4. Step 4: Simplify right side
    13,363.36x = 143,369,887.23
  5. Step 5: Solve for x
    x = 143,369,887.23/13,363.36
  6. Step 6: Final answer
    x = 10,728.58

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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.