Home / 43,140.42-64,706.36-13,557.47

Finding the Fourth Proportional to 43,140.42, 64,706.36 and 13,557.47

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Solution

The fourth proportional to 43,140.42, 64,706.36 and 13,557.47 is: 20,334.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,140.42 : 64,706.36 = 13,557.47 : x
  2. Step 2: Convert to fraction form
    43,140.42/64,706.36 = 13,557.47/x
  3. Step 3: Cross multiply
    43,140.42x = 64,706.36 × 13,557.47
  4. Step 4: Simplify right side
    43,140.42x = 877,254,143.19
  5. Step 5: Solve for x
    x = 877,254,143.19/43,140.42
  6. Step 6: Final answer
    x = 20,334.85

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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.