Home / 28,642.79-42,955.88-12,002.36

Finding the Fourth Proportional to 28,642.79, 42,955.88 and 12,002.36

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Solution

The fourth proportional to 28,642.79, 42,955.88 and 12,002.36 is: 18,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,642.79 : 42,955.88 = 12,002.36 : x
  2. Step 2: Convert to fraction form
    28,642.79/42,955.88 = 12,002.36/x
  3. Step 3: Cross multiply
    28,642.79x = 42,955.88 × 12,002.36
  4. Step 4: Simplify right side
    28,642.79x = 515,571,661.09
  5. Step 5: Solve for x
    x = 515,571,661.09/28,642.79
  6. Step 6: Final answer
    x = 18,000.05

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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.