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Finding the Fourth Proportional to 28,625.00, 42,900.53 and 12,818.48

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Solution

The fourth proportional to 28,625.00, 42,900.53 and 12,818.48 is: 19,211.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,625.00 : 42,900.53 = 12,818.48 : x
  2. Step 2: Convert to fraction form
    28,625.00/42,900.53 = 12,818.48/x
  3. Step 3: Cross multiply
    28,625.00x = 42,900.53 × 12,818.48
  4. Step 4: Simplify right side
    28,625.00x = 549,919,403.34
  5. Step 5: Solve for x
    x = 549,919,403.34/28,625.00
  6. Step 6: Final answer
    x = 19,211.16

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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.