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Finding the Fourth Proportional to 39,507.95, 59,264.94 and 13,212.74

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Solution

The fourth proportional to 39,507.95, 59,264.94 and 13,212.74 is: 19,820.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,507.95 : 59,264.94 = 13,212.74 : x
  2. Step 2: Convert to fraction form
    39,507.95/59,264.94 = 13,212.74/x
  3. Step 3: Cross multiply
    39,507.95x = 59,264.94 × 13,212.74
  4. Step 4: Simplify right side
    39,507.95x = 783,052,243.34
  5. Step 5: Solve for x
    x = 783,052,243.34/39,507.95
  6. Step 6: Final answer
    x = 19,820.12

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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.