Home / 42,901.28-64,353.63-13,318.46

Finding the Fourth Proportional to 42,901.28, 64,353.63 and 13,318.46

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Solution

The fourth proportional to 42,901.28, 64,353.63 and 13,318.46 is: 19,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,901.28 : 64,353.63 = 13,318.46 : x
  2. Step 2: Convert to fraction form
    42,901.28/64,353.63 = 13,318.46/x
  3. Step 3: Cross multiply
    42,901.28x = 64,353.63 × 13,318.46
  4. Step 4: Simplify right side
    42,901.28x = 857,091,247.01
  5. Step 5: Solve for x
    x = 857,091,247.01/42,901.28
  6. Step 6: Final answer
    x = 19,978.22

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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.