Home / 21,288.22-29,328.78-16,810.32

Finding the Fourth Proportional to 21,288.22, 29,328.78 and 16,810.32

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Solution

The fourth proportional to 21,288.22, 29,328.78 and 16,810.32 is: 23,159.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.22 : 29,328.78 = 16,810.32 : x
  2. Step 2: Convert to fraction form
    21,288.22/29,328.78 = 16,810.32/x
  3. Step 3: Cross multiply
    21,288.22x = 29,328.78 × 16,810.32
  4. Step 4: Simplify right side
    21,288.22x = 493,026,177.01
  5. Step 5: Solve for x
    x = 493,026,177.01/21,288.22
  6. Step 6: Final answer
    x = 23,159.58

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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.