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Finding the Fourth Proportional to 30,503.42, 45,695.54 and 21,014.07

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Solution

The fourth proportional to 30,503.42, 45,695.54 and 21,014.07 is: 31,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,503.42 : 45,695.54 = 21,014.07 : x
  2. Step 2: Convert to fraction form
    30,503.42/45,695.54 = 21,014.07/x
  3. Step 3: Cross multiply
    30,503.42x = 45,695.54 × 21,014.07
  4. Step 4: Simplify right side
    30,503.42x = 960,249,157.42
  5. Step 5: Solve for x
    x = 960,249,157.42/30,503.42
  6. Step 6: Final answer
    x = 31,480.05

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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.