Home / 13,699.61-20,547.80-3,839.68

Finding the Fourth Proportional to 13,699.61, 20,547.80 and 3,839.68

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Solution

The fourth proportional to 13,699.61, 20,547.80 and 3,839.68 is: 5,759.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.61 : 20,547.80 = 3,839.68 : x
  2. Step 2: Convert to fraction form
    13,699.61/20,547.80 = 3,839.68/x
  3. Step 3: Cross multiply
    13,699.61x = 20,547.80 × 3,839.68
  4. Step 4: Simplify right side
    13,699.61x = 78,896,986.30
  5. Step 5: Solve for x
    x = 78,896,986.30/13,699.61
  6. Step 6: Final answer
    x = 5,759.07

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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.