Home / 18,970.82-28,459.57-6,487.91

Finding the Fourth Proportional to 18,970.82, 28,459.57 and 6,487.91

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Solution

The fourth proportional to 18,970.82, 28,459.57 and 6,487.91 is: 9,733.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.82 : 28,459.57 = 6,487.91 : x
  2. Step 2: Convert to fraction form
    18,970.82/28,459.57 = 6,487.91/x
  3. Step 3: Cross multiply
    18,970.82x = 28,459.57 × 6,487.91
  4. Step 4: Simplify right side
    18,970.82x = 184,643,128.80
  5. Step 5: Solve for x
    x = 184,643,128.80/18,970.82
  6. Step 6: Final answer
    x = 9,733.01

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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.