Home / 42,989.04-64,460.88-13,401.36

Finding the Fourth Proportional to 42,989.04, 64,460.88 and 13,401.36

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Solution

The fourth proportional to 42,989.04, 64,460.88 and 13,401.36 is: 20,094.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,989.04 : 64,460.88 = 13,401.36 : x
  2. Step 2: Convert to fraction form
    42,989.04/64,460.88 = 13,401.36/x
  3. Step 3: Cross multiply
    42,989.04x = 64,460.88 × 13,401.36
  4. Step 4: Simplify right side
    42,989.04x = 863,863,458.80
  5. Step 5: Solve for x
    x = 863,863,458.80/42,989.04
  6. Step 6: Final answer
    x = 20,094.97

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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.