Home / 28,685.36-43,004.34-12,663.50

Finding the Fourth Proportional to 28,685.36, 43,004.34 and 12,663.50

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Solution

The fourth proportional to 28,685.36, 43,004.34 and 12,663.50 is: 18,984.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.36 : 43,004.34 = 12,663.50 : x
  2. Step 2: Convert to fraction form
    28,685.36/43,004.34 = 12,663.50/x
  3. Step 3: Cross multiply
    28,685.36x = 43,004.34 × 12,663.50
  4. Step 4: Simplify right side
    28,685.36x = 544,585,459.59
  5. Step 5: Solve for x
    x = 544,585,459.59/28,685.36
  6. Step 6: Final answer
    x = 18,984.79

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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.