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Finding the Fourth Proportional to 20,503.95, 30,643.58 and 14,968.95

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Solution

The fourth proportional to 20,503.95, 30,643.58 and 14,968.95 is: 22,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.95 : 30,643.58 = 14,968.95 : x
  2. Step 2: Convert to fraction form
    20,503.95/30,643.58 = 14,968.95/x
  3. Step 3: Cross multiply
    20,503.95x = 30,643.58 × 14,968.95
  4. Step 4: Simplify right side
    20,503.95x = 458,702,216.84
  5. Step 5: Solve for x
    x = 458,702,216.84/20,503.95
  6. Step 6: Final answer
    x = 22,371.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.