Home / 15,887.53-21,925.79-9,174.39

Finding the Fourth Proportional to 15,887.53, 21,925.79 and 9,174.39

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Solution

The fourth proportional to 15,887.53, 21,925.79 and 9,174.39 is: 12,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.53 : 21,925.79 = 9,174.39 : x
  2. Step 2: Convert to fraction form
    15,887.53/21,925.79 = 9,174.39/x
  3. Step 3: Cross multiply
    15,887.53x = 21,925.79 × 9,174.39
  4. Step 4: Simplify right side
    15,887.53x = 201,155,748.52
  5. Step 5: Solve for x
    x = 201,155,748.52/15,887.53
  6. Step 6: Final answer
    x = 12,661.23

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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.