Home / 13,346.89-18,417.48-7,680.13

Finding the Fourth Proportional to 13,346.89, 18,417.48 and 7,680.13

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Solution

The fourth proportional to 13,346.89, 18,417.48 and 7,680.13 is: 10,597.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.89 : 18,417.48 = 7,680.13 : x
  2. Step 2: Convert to fraction form
    13,346.89/18,417.48 = 7,680.13/x
  3. Step 3: Cross multiply
    13,346.89x = 18,417.48 × 7,680.13
  4. Step 4: Simplify right side
    13,346.89x = 141,448,659.87
  5. Step 5: Solve for x
    x = 141,448,659.87/13,346.89
  6. Step 6: Final answer
    x = 10,597.87

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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.