Home / 15,564.32-21,588.80-15,003.92

Finding the Fourth Proportional to 15,564.32, 21,588.80 and 15,003.92

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Solution

The fourth proportional to 15,564.32, 21,588.80 and 15,003.92 is: 20,811.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.32 : 21,588.80 = 15,003.92 : x
  2. Step 2: Convert to fraction form
    15,564.32/21,588.80 = 15,003.92/x
  3. Step 3: Cross multiply
    15,564.32x = 21,588.80 × 15,003.92
  4. Step 4: Simplify right side
    15,564.32x = 323,916,628.10
  5. Step 5: Solve for x
    x = 323,916,628.10/15,564.32
  6. Step 6: Final answer
    x = 20,811.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.