Home / 20,646.73-28,492.48-11,215.29

Finding the Fourth Proportional to 20,646.73, 28,492.48 and 11,215.29

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Solution

The fourth proportional to 20,646.73, 28,492.48 and 11,215.29 is: 15,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.73 : 28,492.48 = 11,215.29 : x
  2. Step 2: Convert to fraction form
    20,646.73/28,492.48 = 11,215.29/x
  3. Step 3: Cross multiply
    20,646.73x = 28,492.48 × 11,215.29
  4. Step 4: Simplify right side
    20,646.73x = 319,551,426.02
  5. Step 5: Solve for x
    x = 319,551,426.02/20,646.73
  6. Step 6: Final answer
    x = 15,477.10

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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.