Home / 13,348.67-18,428.55-9,990.26

Finding the Fourth Proportional to 13,348.67, 18,428.55 and 9,990.26

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Solution

The fourth proportional to 13,348.67, 18,428.55 and 9,990.26 is: 13,792.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.67 : 18,428.55 = 9,990.26 : x
  2. Step 2: Convert to fraction form
    13,348.67/18,428.55 = 9,990.26/x
  3. Step 3: Cross multiply
    13,348.67x = 18,428.55 × 9,990.26
  4. Step 4: Simplify right side
    13,348.67x = 184,106,039.40
  5. Step 5: Solve for x
    x = 184,106,039.40/13,348.67
  6. Step 6: Final answer
    x = 13,792.09

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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.