Home / 15,699.60-21,612.54-13,604.12

Finding the Fourth Proportional to 15,699.60, 21,612.54 and 13,604.12

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Solution

The fourth proportional to 15,699.60, 21,612.54 and 13,604.12 is: 18,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.60 : 21,612.54 = 13,604.12 : x
  2. Step 2: Convert to fraction form
    15,699.60/21,612.54 = 13,604.12/x
  3. Step 3: Cross multiply
    15,699.60x = 21,612.54 × 13,604.12
  4. Step 4: Simplify right side
    15,699.60x = 294,019,587.66
  5. Step 5: Solve for x
    x = 294,019,587.66/15,699.60
  6. Step 6: Final answer
    x = 18,727.84

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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.