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Finding the Fourth Proportional to 14,362.87, 21,543.74 and 7,342.80

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Solution

The fourth proportional to 14,362.87, 21,543.74 and 7,342.80 is: 11,013.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,362.87 : 21,543.74 = 7,342.80 : x
  2. Step 2: Convert to fraction form
    14,362.87/21,543.74 = 7,342.80/x
  3. Step 3: Cross multiply
    14,362.87x = 21,543.74 × 7,342.80
  4. Step 4: Simplify right side
    14,362.87x = 158,191,392.43
  5. Step 5: Solve for x
    x = 158,191,392.43/14,362.87
  6. Step 6: Final answer
    x = 11,013.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.