Home / 42,665.48-64,005.26-13,080.36

Finding the Fourth Proportional to 42,665.48, 64,005.26 and 13,080.36

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Solution

The fourth proportional to 42,665.48, 64,005.26 and 13,080.36 is: 19,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,665.48 : 64,005.26 = 13,080.36 : x
  2. Step 2: Convert to fraction form
    42,665.48/64,005.26 = 13,080.36/x
  3. Step 3: Cross multiply
    42,665.48x = 64,005.26 × 13,080.36
  4. Step 4: Simplify right side
    42,665.48x = 837,211,842.69
  5. Step 5: Solve for x
    x = 837,211,842.69/42,665.48
  6. Step 6: Final answer
    x = 19,622.70

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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.