Home / 11,259.60-15,539.40-6,784.80

Finding the Fourth Proportional to 11,259.60, 15,539.40 and 6,784.80

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Solution

The fourth proportional to 11,259.60, 15,539.40 and 6,784.80 is: 9,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,259.60 : 15,539.40 = 6,784.80 : x
  2. Step 2: Convert to fraction form
    11,259.60/15,539.40 = 6,784.80/x
  3. Step 3: Cross multiply
    11,259.60x = 15,539.40 × 6,784.80
  4. Step 4: Simplify right side
    11,259.60x = 105,431,721.12
  5. Step 5: Solve for x
    x = 105,431,721.12/11,259.60
  6. Step 6: Final answer
    x = 9,363.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.