Home / 28,478.34-42,717.53-7,418.33

Finding the Fourth Proportional to 28,478.34, 42,717.53 and 7,418.33

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Solution

The fourth proportional to 28,478.34, 42,717.53 and 7,418.33 is: 11,127.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,478.34 : 42,717.53 = 7,418.33 : x
  2. Step 2: Convert to fraction form
    28,478.34/42,717.53 = 7,418.33/x
  3. Step 3: Cross multiply
    28,478.34x = 42,717.53 × 7,418.33
  4. Step 4: Simplify right side
    28,478.34x = 316,892,483.65
  5. Step 5: Solve for x
    x = 316,892,483.65/28,478.34
  6. Step 6: Final answer
    x = 11,127.49

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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.