Home / 28,439.58-39,243.51-20,041.50

Finding the Fourth Proportional to 28,439.58, 39,243.51 and 20,041.50

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Solution

The fourth proportional to 28,439.58, 39,243.51 and 20,041.50 is: 27,655.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.58 : 39,243.51 = 20,041.50 : x
  2. Step 2: Convert to fraction form
    28,439.58/39,243.51 = 20,041.50/x
  3. Step 3: Cross multiply
    28,439.58x = 39,243.51 × 20,041.50
  4. Step 4: Simplify right side
    28,439.58x = 786,498,805.67
  5. Step 5: Solve for x
    x = 786,498,805.67/28,439.58
  6. Step 6: Final answer
    x = 27,655.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.