Home / 9,986.87-14,967.60-5,309.12

Finding the Fourth Proportional to 9,986.87, 14,967.60 and 5,309.12

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Solution

The fourth proportional to 9,986.87, 14,967.60 and 5,309.12 is: 7,956.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.87 : 14,967.60 = 5,309.12 : x
  2. Step 2: Convert to fraction form
    9,986.87/14,967.60 = 5,309.12/x
  3. Step 3: Cross multiply
    9,986.87x = 14,967.60 × 5,309.12
  4. Step 4: Simplify right side
    9,986.87x = 79,464,784.51
  5. Step 5: Solve for x
    x = 79,464,784.51/9,986.87
  6. Step 6: Final answer
    x = 7,956.93

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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.