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Finding the Fourth Proportional to 30,458.03, 42,045.03 and 18,525.20

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Solution

The fourth proportional to 30,458.03, 42,045.03 and 18,525.20 is: 25,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,458.03 : 42,045.03 = 18,525.20 : x
  2. Step 2: Convert to fraction form
    30,458.03/42,045.03 = 18,525.20/x
  3. Step 3: Cross multiply
    30,458.03x = 42,045.03 × 18,525.20
  4. Step 4: Simplify right side
    30,458.03x = 778,892,379.53
  5. Step 5: Solve for x
    x = 778,892,379.53/30,458.03
  6. Step 6: Final answer
    x = 25,572.65

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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.