Home / 21,623.64-32,336.64-15,720.36

Finding the Fourth Proportional to 21,623.64, 32,336.64 and 15,720.36

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Solution

The fourth proportional to 21,623.64, 32,336.64 and 15,720.36 is: 23,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.64 : 32,336.64 = 15,720.36 : x
  2. Step 2: Convert to fraction form
    21,623.64/32,336.64 = 15,720.36/x
  3. Step 3: Cross multiply
    21,623.64x = 32,336.64 × 15,720.36
  4. Step 4: Simplify right side
    21,623.64x = 508,343,621.99
  5. Step 5: Solve for x
    x = 508,343,621.99/21,623.64
  6. Step 6: Final answer
    x = 23,508.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.