Home / 13,820.09-19,071.77-7,853.74

Finding the Fourth Proportional to 13,820.09, 19,071.77 and 7,853.74

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Solution

The fourth proportional to 13,820.09, 19,071.77 and 7,853.74 is: 10,838.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.09 : 19,071.77 = 7,853.74 : x
  2. Step 2: Convert to fraction form
    13,820.09/19,071.77 = 7,853.74/x
  3. Step 3: Cross multiply
    13,820.09x = 19,071.77 × 7,853.74
  4. Step 4: Simplify right side
    13,820.09x = 149,784,635.97
  5. Step 5: Solve for x
    x = 149,784,635.97/13,820.09
  6. Step 6: Final answer
    x = 10,838.18

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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.