Home / 28,013.88-42,006.22-8,289.76

Finding the Fourth Proportional to 28,013.88, 42,006.22 and 8,289.76

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Solution

The fourth proportional to 28,013.88, 42,006.22 and 8,289.76 is: 12,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.88 : 42,006.22 = 8,289.76 : x
  2. Step 2: Convert to fraction form
    28,013.88/42,006.22 = 8,289.76/x
  3. Step 3: Cross multiply
    28,013.88x = 42,006.22 × 8,289.76
  4. Step 4: Simplify right side
    28,013.88x = 348,221,482.31
  5. Step 5: Solve for x
    x = 348,221,482.31/28,013.88
  6. Step 6: Final answer
    x = 12,430.32

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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.