Home / 43,305.95-64,961.37-12,143.63

Finding the Fourth Proportional to 43,305.95, 64,961.37 and 12,143.63

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Solution

The fourth proportional to 43,305.95, 64,961.37 and 12,143.63 is: 18,216.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,305.95 : 64,961.37 = 12,143.63 : x
  2. Step 2: Convert to fraction form
    43,305.95/64,961.37 = 12,143.63/x
  3. Step 3: Cross multiply
    43,305.95x = 64,961.37 × 12,143.63
  4. Step 4: Simplify right side
    43,305.95x = 788,866,516.77
  5. Step 5: Solve for x
    x = 788,866,516.77/43,305.95
  6. Step 6: Final answer
    x = 18,216.13

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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.