Home / 13,307.59-18,363.81-7,338.90

Finding the Fourth Proportional to 13,307.59, 18,363.81 and 7,338.90

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Solution

The fourth proportional to 13,307.59, 18,363.81 and 7,338.90 is: 10,127.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.59 : 18,363.81 = 7,338.90 : x
  2. Step 2: Convert to fraction form
    13,307.59/18,363.81 = 7,338.90/x
  3. Step 3: Cross multiply
    13,307.59x = 18,363.81 × 7,338.90
  4. Step 4: Simplify right side
    13,307.59x = 134,770,261.59
  5. Step 5: Solve for x
    x = 134,770,261.59/13,307.59
  6. Step 6: Final answer
    x = 10,127.32

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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.