Home / 13,080.40-19,588.20-9,775.60

Finding the Fourth Proportional to 13,080.40, 19,588.20 and 9,775.60

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Solution

The fourth proportional to 13,080.40, 19,588.20 and 9,775.60 is: 14,639.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.40 : 19,588.20 = 9,775.60 : x
  2. Step 2: Convert to fraction form
    13,080.40/19,588.20 = 9,775.60/x
  3. Step 3: Cross multiply
    13,080.40x = 19,588.20 × 9,775.60
  4. Step 4: Simplify right side
    13,080.40x = 191,486,407.92
  5. Step 5: Solve for x
    x = 191,486,407.92/13,080.40
  6. Step 6: Final answer
    x = 14,639.19

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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.