Home / 21,695.77-29,958.69-13,752.10

Finding the Fourth Proportional to 21,695.77, 29,958.69 and 13,752.10

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Solution

The fourth proportional to 21,695.77, 29,958.69 and 13,752.10 is: 18,989.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.77 : 29,958.69 = 13,752.10 : x
  2. Step 2: Convert to fraction form
    21,695.77/29,958.69 = 13,752.10/x
  3. Step 3: Cross multiply
    21,695.77x = 29,958.69 × 13,752.10
  4. Step 4: Simplify right side
    21,695.77x = 411,994,900.75
  5. Step 5: Solve for x
    x = 411,994,900.75/21,695.77
  6. Step 6: Final answer
    x = 18,989.64

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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.