Home / 18,947.10-28,421.41-7,099.64

Finding the Fourth Proportional to 18,947.10, 28,421.41 and 7,099.64

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Solution

The fourth proportional to 18,947.10, 28,421.41 and 7,099.64 is: 10,649.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.10 : 28,421.41 = 7,099.64 : x
  2. Step 2: Convert to fraction form
    18,947.10/28,421.41 = 7,099.64/x
  3. Step 3: Cross multiply
    18,947.10x = 28,421.41 × 7,099.64
  4. Step 4: Simplify right side
    18,947.10x = 201,781,779.29
  5. Step 5: Solve for x
    x = 201,781,779.29/18,947.10
  6. Step 6: Final answer
    x = 10,649.74

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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.