Home / 43,688.70-65,500.65-18,708.30

Finding the Fourth Proportional to 43,688.70, 65,500.65 and 18,708.30

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Solution

The fourth proportional to 43,688.70, 65,500.65 and 18,708.30 is: 28,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,688.70 : 65,500.65 = 18,708.30 : x
  2. Step 2: Convert to fraction form
    43,688.70/65,500.65 = 18,708.30/x
  3. Step 3: Cross multiply
    43,688.70x = 65,500.65 × 18,708.30
  4. Step 4: Simplify right side
    43,688.70x = 1,225,405,810.40
  5. Step 5: Solve for x
    x = 1,225,405,810.40/43,688.70
  6. Step 6: Final answer
    x = 28,048.58

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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.