Home / 15,472.15-21,360.32-10,699.09

Finding the Fourth Proportional to 15,472.15, 21,360.32 and 10,699.09

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Solution

The fourth proportional to 15,472.15, 21,360.32 and 10,699.09 is: 14,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.15 : 21,360.32 = 10,699.09 : x
  2. Step 2: Convert to fraction form
    15,472.15/21,360.32 = 10,699.09/x
  3. Step 3: Cross multiply
    15,472.15x = 21,360.32 × 10,699.09
  4. Step 4: Simplify right side
    15,472.15x = 228,535,986.11
  5. Step 5: Solve for x
    x = 228,535,986.11/15,472.15
  6. Step 6: Final answer
    x = 14,770.80

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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.