Home / 9,865.45-13,614.55-5,389.16

Finding the Fourth Proportional to 9,865.45, 13,614.55 and 5,389.16

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Solution

The fourth proportional to 9,865.45, 13,614.55 and 5,389.16 is: 7,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.45 : 13,614.55 = 5,389.16 : x
  2. Step 2: Convert to fraction form
    9,865.45/13,614.55 = 5,389.16/x
  3. Step 3: Cross multiply
    9,865.45x = 13,614.55 × 5,389.16
  4. Step 4: Simplify right side
    9,865.45x = 73,370,988.28
  5. Step 5: Solve for x
    x = 73,370,988.28/9,865.45
  6. Step 6: Final answer
    x = 7,437.17

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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.