Home / 21,346.08-29,440.92-13,690.08

Finding the Fourth Proportional to 21,346.08, 29,440.92 and 13,690.08

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Solution

The fourth proportional to 21,346.08, 29,440.92 and 13,690.08 is: 18,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.08 : 29,440.92 = 13,690.08 : x
  2. Step 2: Convert to fraction form
    21,346.08/29,440.92 = 13,690.08/x
  3. Step 3: Cross multiply
    21,346.08x = 29,440.92 × 13,690.08
  4. Step 4: Simplify right side
    21,346.08x = 403,048,550.07
  5. Step 5: Solve for x
    x = 403,048,550.07/21,346.08
  6. Step 6: Final answer
    x = 18,881.62

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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.