Home / 28,156.56-42,229.44-10,621.68

Finding the Fourth Proportional to 28,156.56, 42,229.44 and 10,621.68

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Solution

The fourth proportional to 28,156.56, 42,229.44 and 10,621.68 is: 15,930.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.56 : 42,229.44 = 10,621.68 : x
  2. Step 2: Convert to fraction form
    28,156.56/42,229.44 = 10,621.68/x
  3. Step 3: Cross multiply
    28,156.56x = 42,229.44 × 10,621.68
  4. Step 4: Simplify right side
    28,156.56x = 448,547,598.26
  5. Step 5: Solve for x
    x = 448,547,598.26/28,156.56
  6. Step 6: Final answer
    x = 15,930.48

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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.