Home / 19,921.59-29,883.60-5,130.99

Finding the Fourth Proportional to 19,921.59, 29,883.60 and 5,130.99

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Solution

The fourth proportional to 19,921.59, 29,883.60 and 5,130.99 is: 7,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.59 : 29,883.60 = 5,130.99 : x
  2. Step 2: Convert to fraction form
    19,921.59/29,883.60 = 5,130.99/x
  3. Step 3: Cross multiply
    19,921.59x = 29,883.60 × 5,130.99
  4. Step 4: Simplify right side
    19,921.59x = 153,332,452.76
  5. Step 5: Solve for x
    x = 153,332,452.76/19,921.59
  6. Step 6: Final answer
    x = 7,696.80

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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.