Home / 12,487.40-17,231.78-6,898.28

Finding the Fourth Proportional to 12,487.40, 17,231.78 and 6,898.28

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Solution

The fourth proportional to 12,487.40, 17,231.78 and 6,898.28 is: 9,519.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.40 : 17,231.78 = 6,898.28 : x
  2. Step 2: Convert to fraction form
    12,487.40/17,231.78 = 6,898.28/x
  3. Step 3: Cross multiply
    12,487.40x = 17,231.78 × 6,898.28
  4. Step 4: Simplify right side
    12,487.40x = 118,869,643.34
  5. Step 5: Solve for x
    x = 118,869,643.34/12,487.40
  6. Step 6: Final answer
    x = 9,519.17

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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.