Home / 21,210.18-29,268.91-12,712.63

Finding the Fourth Proportional to 21,210.18, 29,268.91 and 12,712.63

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Solution

The fourth proportional to 21,210.18, 29,268.91 and 12,712.63 is: 17,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.18 : 29,268.91 = 12,712.63 : x
  2. Step 2: Convert to fraction form
    21,210.18/29,268.91 = 12,712.63/x
  3. Step 3: Cross multiply
    21,210.18x = 29,268.91 × 12,712.63
  4. Step 4: Simplify right side
    21,210.18x = 372,084,823.33
  5. Step 5: Solve for x
    x = 372,084,823.33/21,210.18
  6. Step 6: Final answer
    x = 17,542.75

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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.