Home / 28,005.48-42,008.55-8,284.43

Finding the Fourth Proportional to 28,005.48, 42,008.55 and 8,284.43

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Solution

The fourth proportional to 28,005.48, 42,008.55 and 8,284.43 is: 12,426.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.48 : 42,008.55 = 8,284.43 : x
  2. Step 2: Convert to fraction form
    28,005.48/42,008.55 = 8,284.43/x
  3. Step 3: Cross multiply
    28,005.48x = 42,008.55 × 8,284.43
  4. Step 4: Simplify right side
    28,005.48x = 348,016,681.83
  5. Step 5: Solve for x
    x = 348,016,681.83/28,005.48
  6. Step 6: Final answer
    x = 12,426.74

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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.