Home / 39,278.02-58,919.76-13,001.21

Finding the Fourth Proportional to 39,278.02, 58,919.76 and 13,001.21

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Solution

The fourth proportional to 39,278.02, 58,919.76 and 13,001.21 is: 19,502.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.02 : 58,919.76 = 13,001.21 : x
  2. Step 2: Convert to fraction form
    39,278.02/58,919.76 = 13,001.21/x
  3. Step 3: Cross multiply
    39,278.02x = 58,919.76 × 13,001.21
  4. Step 4: Simplify right side
    39,278.02x = 766,028,107.90
  5. Step 5: Solve for x
    x = 766,028,107.90/39,278.02
  6. Step 6: Final answer
    x = 19,502.72

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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.