Home / 9,720.40-13,411.56-6,571.12

Finding the Fourth Proportional to 9,720.40, 13,411.56 and 6,571.12

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Solution

The fourth proportional to 9,720.40, 13,411.56 and 6,571.12 is: 9,066.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.40 : 13,411.56 = 6,571.12 : x
  2. Step 2: Convert to fraction form
    9,720.40/13,411.56 = 6,571.12/x
  3. Step 3: Cross multiply
    9,720.40x = 13,411.56 × 6,571.12
  4. Step 4: Simplify right side
    9,720.40x = 88,128,970.15
  5. Step 5: Solve for x
    x = 88,128,970.15/9,720.40
  6. Step 6: Final answer
    x = 9,066.39

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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.