Home / 19,128.60-28,693.76-5,981.24

Finding the Fourth Proportional to 19,128.60, 28,693.76 and 5,981.24

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Solution

The fourth proportional to 19,128.60, 28,693.76 and 5,981.24 is: 8,972.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.60 : 28,693.76 = 5,981.24 : x
  2. Step 2: Convert to fraction form
    19,128.60/28,693.76 = 5,981.24/x
  3. Step 3: Cross multiply
    19,128.60x = 28,693.76 × 5,981.24
  4. Step 4: Simplify right side
    19,128.60x = 171,624,265.06
  5. Step 5: Solve for x
    x = 171,624,265.06/19,128.60
  6. Step 6: Final answer
    x = 8,972.13

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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.