Home / 13,386.84-20,080.20-5,591.40

Finding the Fourth Proportional to 13,386.84, 20,080.20 and 5,591.40

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Solution

The fourth proportional to 13,386.84, 20,080.20 and 5,591.40 is: 8,387.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.84 : 20,080.20 = 5,591.40 : x
  2. Step 2: Convert to fraction form
    13,386.84/20,080.20 = 5,591.40/x
  3. Step 3: Cross multiply
    13,386.84x = 20,080.20 × 5,591.40
  4. Step 4: Simplify right side
    13,386.84x = 112,276,430.28
  5. Step 5: Solve for x
    x = 112,276,430.28/13,386.84
  6. Step 6: Final answer
    x = 8,387.07

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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.