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Finding the Fourth Proportional to 9,681.96, 13,368.63 and 7,440.30

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Solution

The fourth proportional to 9,681.96, 13,368.63 and 7,440.30 is: 10,273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,681.96 : 13,368.63 = 7,440.30 : x
  2. Step 2: Convert to fraction form
    9,681.96/13,368.63 = 7,440.30/x
  3. Step 3: Cross multiply
    9,681.96x = 13,368.63 × 7,440.30
  4. Step 4: Simplify right side
    9,681.96x = 99,466,617.79
  5. Step 5: Solve for x
    x = 99,466,617.79/9,681.96
  6. Step 6: Final answer
    x = 10,273.40

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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.