Home / 9,720.18-13,415.13-5,527.62

Finding the Fourth Proportional to 9,720.18, 13,415.13 and 5,527.62

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Solution

The fourth proportional to 9,720.18, 13,415.13 and 5,527.62 is: 7,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.18 : 13,415.13 = 5,527.62 : x
  2. Step 2: Convert to fraction form
    9,720.18/13,415.13 = 5,527.62/x
  3. Step 3: Cross multiply
    9,720.18x = 13,415.13 × 5,527.62
  4. Step 4: Simplify right side
    9,720.18x = 74,153,740.89
  5. Step 5: Solve for x
    x = 74,153,740.89/9,720.18
  6. Step 6: Final answer
    x = 7,628.84

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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.