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Finding the Fourth Proportional to 30,503.99, 42,093.21 and 18,566.01

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Solution

The fourth proportional to 30,503.99, 42,093.21 and 18,566.01 is: 25,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.99 : 42,093.21 = 18,566.01 : x
  2. Step 2: Convert to fraction form
    30,503.99/42,093.21 = 18,566.01/x
  3. Step 3: Cross multiply
    30,503.99x = 42,093.21 × 18,566.01
  4. Step 4: Simplify right side
    30,503.99x = 781,502,957.79
  5. Step 5: Solve for x
    x = 781,502,957.79/30,503.99
  6. Step 6: Final answer
    x = 25,619.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.