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Finding the Fourth Proportional to 18,603.50, 27,881.52 and 8,721.01

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Solution

The fourth proportional to 18,603.50, 27,881.52 and 8,721.01 is: 13,070.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.50 : 27,881.52 = 8,721.01 : x
  2. Step 2: Convert to fraction form
    18,603.50/27,881.52 = 8,721.01/x
  3. Step 3: Cross multiply
    18,603.50x = 27,881.52 × 8,721.01
  4. Step 4: Simplify right side
    18,603.50x = 243,154,875.33
  5. Step 5: Solve for x
    x = 243,154,875.33/18,603.50
  6. Step 6: Final answer
    x = 13,070.38

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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.