Home / 20,649.76-28,495.75-11,697.08

Finding the Fourth Proportional to 20,649.76, 28,495.75 and 11,697.08

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Solution

The fourth proportional to 20,649.76, 28,495.75 and 11,697.08 is: 16,141.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.76 : 28,495.75 = 11,697.08 : x
  2. Step 2: Convert to fraction form
    20,649.76/28,495.75 = 11,697.08/x
  3. Step 3: Cross multiply
    20,649.76x = 28,495.75 × 11,697.08
  4. Step 4: Simplify right side
    20,649.76x = 333,316,937.69
  5. Step 5: Solve for x
    x = 333,316,937.69/20,649.76
  6. Step 6: Final answer
    x = 16,141.45

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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.