Home / 13,220.83-18,243.59-7,554.45

Finding the Fourth Proportional to 13,220.83, 18,243.59 and 7,554.45

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Solution

The fourth proportional to 13,220.83, 18,243.59 and 7,554.45 is: 10,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.83 : 18,243.59 = 7,554.45 : x
  2. Step 2: Convert to fraction form
    13,220.83/18,243.59 = 7,554.45/x
  3. Step 3: Cross multiply
    13,220.83x = 18,243.59 × 7,554.45
  4. Step 4: Simplify right side
    13,220.83x = 137,820,319.12
  5. Step 5: Solve for x
    x = 137,820,319.12/13,220.83
  6. Step 6: Final answer
    x = 10,424.48

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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.