Home / 13,448.76-18,561.72-7,782.66

Finding the Fourth Proportional to 13,448.76, 18,561.72 and 7,782.66

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Solution

The fourth proportional to 13,448.76, 18,561.72 and 7,782.66 is: 10,741.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.76 : 18,561.72 = 7,782.66 : x
  2. Step 2: Convert to fraction form
    13,448.76/18,561.72 = 7,782.66/x
  3. Step 3: Cross multiply
    13,448.76x = 18,561.72 × 7,782.66
  4. Step 4: Simplify right side
    13,448.76x = 144,459,555.78
  5. Step 5: Solve for x
    x = 144,459,555.78/13,448.76
  6. Step 6: Final answer
    x = 10,741.48

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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.