Home / 15,655.05-21,603.60-8,940.69

Finding the Fourth Proportional to 15,655.05, 21,603.60 and 8,940.69

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Solution

The fourth proportional to 15,655.05, 21,603.60 and 8,940.69 is: 12,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.05 : 21,603.60 = 8,940.69 : x
  2. Step 2: Convert to fraction form
    15,655.05/21,603.60 = 8,940.69/x
  3. Step 3: Cross multiply
    15,655.05x = 21,603.60 × 8,940.69
  4. Step 4: Simplify right side
    15,655.05x = 193,151,090.48
  5. Step 5: Solve for x
    x = 193,151,090.48/15,655.05
  6. Step 6: Final answer
    x = 12,337.94

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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.