Home / 13,818.40-19,071.86-8,152.80

Finding the Fourth Proportional to 13,818.40, 19,071.86 and 8,152.80

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Solution

The fourth proportional to 13,818.40, 19,071.86 and 8,152.80 is: 11,252.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.40 : 19,071.86 = 8,152.80 : x
  2. Step 2: Convert to fraction form
    13,818.40/19,071.86 = 8,152.80/x
  3. Step 3: Cross multiply
    13,818.40x = 19,071.86 × 8,152.80
  4. Step 4: Simplify right side
    13,818.40x = 155,489,060.21
  5. Step 5: Solve for x
    x = 155,489,060.21/13,818.40
  6. Step 6: Final answer
    x = 11,252.32

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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.