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Finding the Fourth Proportional to 14,144.61, 21,209.64 and 7,484.70

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Solution

The fourth proportional to 14,144.61, 21,209.64 and 7,484.70 is: 11,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.61 : 21,209.64 = 7,484.70 : x
  2. Step 2: Convert to fraction form
    14,144.61/21,209.64 = 7,484.70/x
  3. Step 3: Cross multiply
    14,144.61x = 21,209.64 × 7,484.70
  4. Step 4: Simplify right side
    14,144.61x = 158,747,792.51
  5. Step 5: Solve for x
    x = 158,747,792.51/14,144.61
  6. Step 6: Final answer
    x = 11,223.20

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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.