Home / 42,840.36-64,289.61-15,138.36

Finding the Fourth Proportional to 42,840.36, 64,289.61 and 15,138.36

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Solution

The fourth proportional to 42,840.36, 64,289.61 and 15,138.36 is: 22,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,840.36 : 64,289.61 = 15,138.36 : x
  2. Step 2: Convert to fraction form
    42,840.36/64,289.61 = 15,138.36/x
  3. Step 3: Cross multiply
    42,840.36x = 64,289.61 × 15,138.36
  4. Step 4: Simplify right side
    42,840.36x = 973,239,260.44
  5. Step 5: Solve for x
    x = 973,239,260.44/42,840.36
  6. Step 6: Final answer
    x = 22,717.81

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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.