Home / 39,420.68-59,140.86-11,718.68

Finding the Fourth Proportional to 39,420.68, 59,140.86 and 11,718.68

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Solution

The fourth proportional to 39,420.68, 59,140.86 and 11,718.68 is: 17,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,420.68 : 59,140.86 = 11,718.68 : x
  2. Step 2: Convert to fraction form
    39,420.68/59,140.86 = 11,718.68/x
  3. Step 3: Cross multiply
    39,420.68x = 59,140.86 × 11,718.68
  4. Step 4: Simplify right side
    39,420.68x = 693,052,813.26
  5. Step 5: Solve for x
    x = 693,052,813.26/39,420.68
  6. Step 6: Final answer
    x = 17,580.95

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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.