Home / 20,663.58-28,513.44-11,710.92

Finding the Fourth Proportional to 20,663.58, 28,513.44 and 11,710.92

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Solution

The fourth proportional to 20,663.58, 28,513.44 and 11,710.92 is: 16,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.58 : 28,513.44 = 11,710.92 : x
  2. Step 2: Convert to fraction form
    20,663.58/28,513.44 = 11,710.92/x
  3. Step 3: Cross multiply
    20,663.58x = 28,513.44 × 11,710.92
  4. Step 4: Simplify right side
    20,663.58x = 333,918,614.76
  5. Step 5: Solve for x
    x = 333,918,614.76/20,663.58
  6. Step 6: Final answer
    x = 16,159.77

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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.