Home / 13,331.48-19,990.37-7,795.63

Finding the Fourth Proportional to 13,331.48, 19,990.37 and 7,795.63

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Solution

The fourth proportional to 13,331.48, 19,990.37 and 7,795.63 is: 11,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.48 : 19,990.37 = 7,795.63 : x
  2. Step 2: Convert to fraction form
    13,331.48/19,990.37 = 7,795.63/x
  3. Step 3: Cross multiply
    13,331.48x = 19,990.37 × 7,795.63
  4. Step 4: Simplify right side
    13,331.48x = 155,837,572.56
  5. Step 5: Solve for x
    x = 155,837,572.56/13,331.48
  6. Step 6: Final answer
    x = 11,689.45

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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.