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Finding the Fourth Proportional to 30,503.66, 45,695.88 and 21,014.30

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Solution

The fourth proportional to 30,503.66, 45,695.88 and 21,014.30 is: 31,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.66 : 45,695.88 = 21,014.30 : x
  2. Step 2: Convert to fraction form
    30,503.66/45,695.88 = 21,014.30/x
  3. Step 3: Cross multiply
    30,503.66x = 45,695.88 × 21,014.30
  4. Step 4: Simplify right side
    30,503.66x = 960,266,702.60
  5. Step 5: Solve for x
    x = 960,266,702.60/30,503.66
  6. Step 6: Final answer
    x = 31,480.38

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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.