Home / 9,981.64-14,972.42-7,792.20

Finding the Fourth Proportional to 9,981.64, 14,972.42 and 7,792.20

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Solution

The fourth proportional to 9,981.64, 14,972.42 and 7,792.20 is: 11,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,981.64 : 14,972.42 = 7,792.20 : x
  2. Step 2: Convert to fraction form
    9,981.64/14,972.42 = 7,792.20/x
  3. Step 3: Cross multiply
    9,981.64x = 14,972.42 × 7,792.20
  4. Step 4: Simplify right side
    9,981.64x = 116,668,091.12
  5. Step 5: Solve for x
    x = 116,668,091.12/9,981.64
  6. Step 6: Final answer
    x = 11,688.27

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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.