Home / 18,689.64-28,034.36-6,210.60

Finding the Fourth Proportional to 18,689.64, 28,034.36 and 6,210.60

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Solution

The fourth proportional to 18,689.64, 28,034.36 and 6,210.60 is: 9,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.64 : 28,034.36 = 6,210.60 : x
  2. Step 2: Convert to fraction form
    18,689.64/28,034.36 = 6,210.60/x
  3. Step 3: Cross multiply
    18,689.64x = 28,034.36 × 6,210.60
  4. Step 4: Simplify right side
    18,689.64x = 174,110,196.22
  5. Step 5: Solve for x
    x = 174,110,196.22/18,689.64
  6. Step 6: Final answer
    x = 9,315.87

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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.