Home / 20,368.26-30,533.76-8,689.68

Finding the Fourth Proportional to 20,368.26, 30,533.76 and 8,689.68

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Solution

The fourth proportional to 20,368.26, 30,533.76 and 8,689.68 is: 13,026.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.26 : 30,533.76 = 8,689.68 : x
  2. Step 2: Convert to fraction form
    20,368.26/30,533.76 = 8,689.68/x
  3. Step 3: Cross multiply
    20,368.26x = 30,533.76 × 8,689.68
  4. Step 4: Simplify right side
    20,368.26x = 265,328,603.60
  5. Step 5: Solve for x
    x = 265,328,603.60/20,368.26
  6. Step 6: Final answer
    x = 13,026.57

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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.