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Finding the Fourth Proportional to 10,800.68, 14,919 and 7,973.80

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Solution

The fourth proportional to 10,800.68, 14,919 and 7,973.80 is: 11,014.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,800.68 : 14,919 = 7,973.80 : x
  2. Step 2: Convert to fraction form
    10,800.68/14,919 = 7,973.80/x
  3. Step 3: Cross multiply
    10,800.68x = 14,919 × 7,973.80
  4. Step 4: Simplify right side
    10,800.68x = 118,961,122.20
  5. Step 5: Solve for x
    x = 118,961,122.20/10,800.68
  6. Step 6: Final answer
    x = 11,014.23

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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.