Home / 15,372.18-21,214.04-9,403.70

Finding the Fourth Proportional to 15,372.18, 21,214.04 and 9,403.70

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Solution

The fourth proportional to 15,372.18, 21,214.04 and 9,403.70 is: 12,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.18 : 21,214.04 = 9,403.70 : x
  2. Step 2: Convert to fraction form
    15,372.18/21,214.04 = 9,403.70/x
  3. Step 3: Cross multiply
    15,372.18x = 21,214.04 × 9,403.70
  4. Step 4: Simplify right side
    15,372.18x = 199,490,314.86
  5. Step 5: Solve for x
    x = 199,490,314.86/15,372.18
  6. Step 6: Final answer
    x = 12,977.36

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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.