Home / 28,424.10-42,636.40-10,889.76

Finding the Fourth Proportional to 28,424.10, 42,636.40 and 10,889.76

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Solution

The fourth proportional to 28,424.10, 42,636.40 and 10,889.76 is: 16,334.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,424.10 : 42,636.40 = 10,889.76 : x
  2. Step 2: Convert to fraction form
    28,424.10/42,636.40 = 10,889.76/x
  3. Step 3: Cross multiply
    28,424.10x = 42,636.40 × 10,889.76
  4. Step 4: Simplify right side
    28,424.10x = 464,300,163.26
  5. Step 5: Solve for x
    x = 464,300,163.26/28,424.10
  6. Step 6: Final answer
    x = 16,334.74

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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.