Home / 43,155.16-64,742.92-13,572.99

Finding the Fourth Proportional to 43,155.16, 64,742.92 and 13,572.99

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Solution

The fourth proportional to 43,155.16, 64,742.92 and 13,572.99 is: 20,362.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,155.16 : 64,742.92 = 13,572.99 : x
  2. Step 2: Convert to fraction form
    43,155.16/64,742.92 = 13,572.99/x
  3. Step 3: Cross multiply
    43,155.16x = 64,742.92 × 13,572.99
  4. Step 4: Simplify right side
    43,155.16x = 878,754,971.80
  5. Step 5: Solve for x
    x = 878,754,971.80/43,155.16
  6. Step 6: Final answer
    x = 20,362.69

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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.