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Finding the Fourth Proportional to 9,656.70, 14,461.40 and 8,721.74

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Solution

The fourth proportional to 9,656.70, 14,461.40 and 8,721.74 is: 13,061.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,656.70 : 14,461.40 = 8,721.74 : x
  2. Step 2: Convert to fraction form
    9,656.70/14,461.40 = 8,721.74/x
  3. Step 3: Cross multiply
    9,656.70x = 14,461.40 × 8,721.74
  4. Step 4: Simplify right side
    9,656.70x = 126,128,570.84
  5. Step 5: Solve for x
    x = 126,128,570.84/9,656.70
  6. Step 6: Final answer
    x = 13,061.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.