Home / 28,042.48-42,056.40-8,315.74

Finding the Fourth Proportional to 28,042.48, 42,056.40 and 8,315.74

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Solution

The fourth proportional to 28,042.48, 42,056.40 and 8,315.74 is: 12,471.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,042.48 : 42,056.40 = 8,315.74 : x
  2. Step 2: Convert to fraction form
    28,042.48/42,056.40 = 8,315.74/x
  3. Step 3: Cross multiply
    28,042.48x = 42,056.40 × 8,315.74
  4. Step 4: Simplify right side
    28,042.48x = 349,730,087.74
  5. Step 5: Solve for x
    x = 349,730,087.74/28,042.48
  6. Step 6: Final answer
    x = 12,471.44

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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.