Home / 28,656.63-42,971.12-12,012.19

Finding the Fourth Proportional to 28,656.63, 42,971.12 and 12,012.19

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Solution

The fourth proportional to 28,656.63, 42,971.12 and 12,012.19 is: 18,012.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.63 : 42,971.12 = 12,012.19 : x
  2. Step 2: Convert to fraction form
    28,656.63/42,971.12 = 12,012.19/x
  3. Step 3: Cross multiply
    28,656.63x = 42,971.12 × 12,012.19
  4. Step 4: Simplify right side
    28,656.63x = 516,177,197.89
  5. Step 5: Solve for x
    x = 516,177,197.89/28,656.63
  6. Step 6: Final answer
    x = 18,012.49

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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.