Home / 9,681.43-13,359.57-5,431.90

Finding the Fourth Proportional to 9,681.43, 13,359.57 and 5,431.90

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Solution

The fourth proportional to 9,681.43, 13,359.57 and 5,431.90 is: 7,495.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.43 : 13,359.57 = 5,431.90 : x
  2. Step 2: Convert to fraction form
    9,681.43/13,359.57 = 5,431.90/x
  3. Step 3: Cross multiply
    9,681.43x = 13,359.57 × 5,431.90
  4. Step 4: Simplify right side
    9,681.43x = 72,567,848.28
  5. Step 5: Solve for x
    x = 72,567,848.28/9,681.43
  6. Step 6: Final answer
    x = 7,495.57

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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.