Home / 21,528.69-29,708.64-12,577.02

Finding the Fourth Proportional to 21,528.69, 29,708.64 and 12,577.02

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Solution

The fourth proportional to 21,528.69, 29,708.64 and 12,577.02 is: 17,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.69 : 29,708.64 = 12,577.02 : x
  2. Step 2: Convert to fraction form
    21,528.69/29,708.64 = 12,577.02/x
  3. Step 3: Cross multiply
    21,528.69x = 29,708.64 × 12,577.02
  4. Step 4: Simplify right side
    21,528.69x = 373,646,159.45
  5. Step 5: Solve for x
    x = 373,646,159.45/21,528.69
  6. Step 6: Final answer
    x = 17,355.73

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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.