Home / 19,415.60-26,775.04-12,699.12

Finding the Fourth Proportional to 19,415.60, 26,775.04 and 12,699.12

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Solution

The fourth proportional to 19,415.60, 26,775.04 and 12,699.12 is: 17,512.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,415.60 : 26,775.04 = 12,699.12 : x
  2. Step 2: Convert to fraction form
    19,415.60/26,775.04 = 12,699.12/x
  3. Step 3: Cross multiply
    19,415.60x = 26,775.04 × 12,699.12
  4. Step 4: Simplify right side
    19,415.60x = 340,019,445.96
  5. Step 5: Solve for x
    x = 340,019,445.96/19,415.60
  6. Step 6: Final answer
    x = 17,512.69

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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.