Home / 39,408.12-59,143.71-20,699.19

Finding the Fourth Proportional to 39,408.12, 59,143.71 and 20,699.19

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Solution

The fourth proportional to 39,408.12, 59,143.71 and 20,699.19 is: 31,065.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.12 : 59,143.71 = 20,699.19 : x
  2. Step 2: Convert to fraction form
    39,408.12/59,143.71 = 20,699.19/x
  3. Step 3: Cross multiply
    39,408.12x = 59,143.71 × 20,699.19
  4. Step 4: Simplify right side
    39,408.12x = 1,224,226,787.10
  5. Step 5: Solve for x
    x = 1,224,226,787.10/39,408.12
  6. Step 6: Final answer
    x = 31,065.34

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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.