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Finding the Fourth Proportional to 18,515.17, 27,774.93 and 6,503.63

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Solution

The fourth proportional to 18,515.17, 27,774.93 and 6,503.63 is: 9,756.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.17 : 27,774.93 = 6,503.63 : x
  2. Step 2: Convert to fraction form
    18,515.17/27,774.93 = 6,503.63/x
  3. Step 3: Cross multiply
    18,515.17x = 27,774.93 × 6,503.63
  4. Step 4: Simplify right side
    18,515.17x = 180,637,835.48
  5. Step 5: Solve for x
    x = 180,637,835.48/18,515.17
  6. Step 6: Final answer
    x = 9,756.21

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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.