Home / 13,560.48-18,712.90-7,895.39

Finding the Fourth Proportional to 13,560.48, 18,712.90 and 7,895.39

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Solution

The fourth proportional to 13,560.48, 18,712.90 and 7,895.39 is: 10,895.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.48 : 18,712.90 = 7,895.39 : x
  2. Step 2: Convert to fraction form
    13,560.48/18,712.90 = 7,895.39/x
  3. Step 3: Cross multiply
    13,560.48x = 18,712.90 × 7,895.39
  4. Step 4: Simplify right side
    13,560.48x = 147,745,643.53
  5. Step 5: Solve for x
    x = 147,745,643.53/13,560.48
  6. Step 6: Final answer
    x = 10,895.31

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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.