Home / 13,890.25-19,168.55-7,602.63

Finding the Fourth Proportional to 13,890.25, 19,168.55 and 7,602.63

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Solution

The fourth proportional to 13,890.25, 19,168.55 and 7,602.63 is: 10,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.25 : 19,168.55 = 7,602.63 : x
  2. Step 2: Convert to fraction form
    13,890.25/19,168.55 = 7,602.63/x
  3. Step 3: Cross multiply
    13,890.25x = 19,168.55 × 7,602.63
  4. Step 4: Simplify right side
    13,890.25x = 145,731,259.43
  5. Step 5: Solve for x
    x = 145,731,259.43/13,890.25
  6. Step 6: Final answer
    x = 10,491.62

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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.