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Finding the Fourth Proportional to 14,346.78, 19,798.15 and 7,973.21

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Solution

The fourth proportional to 14,346.78, 19,798.15 and 7,973.21 is: 11,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,346.78 : 19,798.15 = 7,973.21 : x
  2. Step 2: Convert to fraction form
    14,346.78/19,798.15 = 7,973.21/x
  3. Step 3: Cross multiply
    14,346.78x = 19,798.15 × 7,973.21
  4. Step 4: Simplify right side
    14,346.78x = 157,854,708.57
  5. Step 5: Solve for x
    x = 157,854,708.57/14,346.78
  6. Step 6: Final answer
    x = 11,002.80

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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.