Home / 15,527.69-21,431.24-9,869.03

Finding the Fourth Proportional to 15,527.69, 21,431.24 and 9,869.03

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Solution

The fourth proportional to 15,527.69, 21,431.24 and 9,869.03 is: 13,621.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.69 : 21,431.24 = 9,869.03 : x
  2. Step 2: Convert to fraction form
    15,527.69/21,431.24 = 9,869.03/x
  3. Step 3: Cross multiply
    15,527.69x = 21,431.24 × 9,869.03
  4. Step 4: Simplify right side
    15,527.69x = 211,505,431.00
  5. Step 5: Solve for x
    x = 211,505,431.00/15,527.69
  6. Step 6: Final answer
    x = 13,621.18

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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.