Home / 43,428.09-65,133.02-12,256.05

Finding the Fourth Proportional to 43,428.09, 65,133.02 and 12,256.05

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Solution

The fourth proportional to 43,428.09, 65,133.02 and 12,256.05 is: 18,381.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,428.09 : 65,133.02 = 12,256.05 : x
  2. Step 2: Convert to fraction form
    43,428.09/65,133.02 = 12,256.05/x
  3. Step 3: Cross multiply
    43,428.09x = 65,133.02 × 12,256.05
  4. Step 4: Simplify right side
    43,428.09x = 798,273,549.77
  5. Step 5: Solve for x
    x = 798,273,549.77/43,428.09
  6. Step 6: Final answer
    x = 18,381.50

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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.