Home / 43,278.30-64,917.45-11,688.30

Finding the Fourth Proportional to 43,278.30, 64,917.45 and 11,688.30

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Solution

The fourth proportional to 43,278.30, 64,917.45 and 11,688.30 is: 17,532.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278.30 : 64,917.45 = 11,688.30 : x
  2. Step 2: Convert to fraction form
    43,278.30/64,917.45 = 11,688.30/x
  3. Step 3: Cross multiply
    43,278.30x = 64,917.45 × 11,688.30
  4. Step 4: Simplify right side
    43,278.30x = 758,774,630.84
  5. Step 5: Solve for x
    x = 758,774,630.84/43,278.30
  6. Step 6: Final answer
    x = 17,532.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.