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Finding the Fourth Proportional to 20,603.18, 30,913.98 and 9,503.93

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Solution

The fourth proportional to 20,603.18, 30,913.98 and 9,503.93 is: 14,260.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.18 : 30,913.98 = 9,503.93 : x
  2. Step 2: Convert to fraction form
    20,603.18/30,913.98 = 9,503.93/x
  3. Step 3: Cross multiply
    20,603.18x = 30,913.98 × 9,503.93
  4. Step 4: Simplify right side
    20,603.18x = 293,804,301.94
  5. Step 5: Solve for x
    x = 293,804,301.94/20,603.18
  6. Step 6: Final answer
    x = 14,260.14

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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.