Home / 21,742.16-30,001.32-13,770.32

Finding the Fourth Proportional to 21,742.16, 30,001.32 and 13,770.32

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Solution

The fourth proportional to 21,742.16, 30,001.32 and 13,770.32 is: 19,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.16 : 30,001.32 = 13,770.32 : x
  2. Step 2: Convert to fraction form
    21,742.16/30,001.32 = 13,770.32/x
  3. Step 3: Cross multiply
    21,742.16x = 30,001.32 × 13,770.32
  4. Step 4: Simplify right side
    21,742.16x = 413,127,776.82
  5. Step 5: Solve for x
    x = 413,127,776.82/21,742.16
  6. Step 6: Final answer
    x = 19,001.23

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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.