Home / 21,042.12-29,048.65-13,086.91

Finding the Fourth Proportional to 21,042.12, 29,048.65 and 13,086.91

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Solution

The fourth proportional to 21,042.12, 29,048.65 and 13,086.91 is: 18,066.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.12 : 29,048.65 = 13,086.91 : x
  2. Step 2: Convert to fraction form
    21,042.12/29,048.65 = 13,086.91/x
  3. Step 3: Cross multiply
    21,042.12x = 29,048.65 × 13,086.91
  4. Step 4: Simplify right side
    21,042.12x = 380,157,068.17
  5. Step 5: Solve for x
    x = 380,157,068.17/21,042.12
  6. Step 6: Final answer
    x = 18,066.48

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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.