Home / 13,281.47-18,328.43-7,313.12

Finding the Fourth Proportional to 13,281.47, 18,328.43 and 7,313.12

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Solution

The fourth proportional to 13,281.47, 18,328.43 and 7,313.12 is: 10,092.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.47 : 18,328.43 = 7,313.12 : x
  2. Step 2: Convert to fraction form
    13,281.47/18,328.43 = 7,313.12/x
  3. Step 3: Cross multiply
    13,281.47x = 18,328.43 × 7,313.12
  4. Step 4: Simplify right side
    13,281.47x = 134,038,039.56
  5. Step 5: Solve for x
    x = 134,038,039.56/13,281.47
  6. Step 6: Final answer
    x = 10,092.11

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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.