Home / 9,720.36-13,417.38-6,740.15

Finding the Fourth Proportional to 9,720.36, 13,417.38 and 6,740.15

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Solution

The fourth proportional to 9,720.36, 13,417.38 and 6,740.15 is: 9,303.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.36 : 13,417.38 = 6,740.15 : x
  2. Step 2: Convert to fraction form
    9,720.36/13,417.38 = 6,740.15/x
  3. Step 3: Cross multiply
    9,720.36x = 13,417.38 × 6,740.15
  4. Step 4: Simplify right side
    9,720.36x = 90,435,086.72
  5. Step 5: Solve for x
    x = 90,435,086.72/9,720.36
  6. Step 6: Final answer
    x = 9,303.68

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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.