Home / 21,008.64-28,992.08-11,577.52

Finding the Fourth Proportional to 21,008.64, 28,992.08 and 11,577.52

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Solution

The fourth proportional to 21,008.64, 28,992.08 and 11,577.52 is: 15,977.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.64 : 28,992.08 = 11,577.52 : x
  2. Step 2: Convert to fraction form
    21,008.64/28,992.08 = 11,577.52/x
  3. Step 3: Cross multiply
    21,008.64x = 28,992.08 × 11,577.52
  4. Step 4: Simplify right side
    21,008.64x = 335,656,386.04
  5. Step 5: Solve for x
    x = 335,656,386.04/21,008.64
  6. Step 6: Final answer
    x = 15,977.06

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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.