Home / 12,528.30-18,792.44-5,132.78

Finding the Fourth Proportional to 12,528.30, 18,792.44 and 5,132.78

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Solution

The fourth proportional to 12,528.30, 18,792.44 and 5,132.78 is: 7,699.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.30 : 18,792.44 = 5,132.78 : x
  2. Step 2: Convert to fraction form
    12,528.30/18,792.44 = 5,132.78/x
  3. Step 3: Cross multiply
    12,528.30x = 18,792.44 × 5,132.78
  4. Step 4: Simplify right side
    12,528.30x = 96,457,460.18
  5. Step 5: Solve for x
    x = 96,457,460.18/12,528.30
  6. Step 6: Final answer
    x = 7,699.17

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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.