Home / 20,483.64-28,269.54-12,531.15

Finding the Fourth Proportional to 20,483.64, 28,269.54 and 12,531.15

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Solution

The fourth proportional to 20,483.64, 28,269.54 and 12,531.15 is: 17,294.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.64 : 28,269.54 = 12,531.15 : x
  2. Step 2: Convert to fraction form
    20,483.64/28,269.54 = 12,531.15/x
  3. Step 3: Cross multiply
    20,483.64x = 28,269.54 × 12,531.15
  4. Step 4: Simplify right side
    20,483.64x = 354,249,846.17
  5. Step 5: Solve for x
    x = 354,249,846.17/20,483.64
  6. Step 6: Final answer
    x = 17,294.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.