Home / 9,865.13-13,614.35-5,389.20

Finding the Fourth Proportional to 9,865.13, 13,614.35 and 5,389.20

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Solution

The fourth proportional to 9,865.13, 13,614.35 and 5,389.20 is: 7,437.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865.13 : 13,614.35 = 5,389.20 : x
  2. Step 2: Convert to fraction form
    9,865.13/13,614.35 = 5,389.20/x
  3. Step 3: Cross multiply
    9,865.13x = 13,614.35 × 5,389.20
  4. Step 4: Simplify right side
    9,865.13x = 73,370,428.07
  5. Step 5: Solve for x
    x = 73,370,428.07/9,865.13
  6. Step 6: Final answer
    x = 7,437.35

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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.