Home / 21,106.86-31,645.53-9,254.94

Finding the Fourth Proportional to 21,106.86, 31,645.53 and 9,254.94

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Solution

The fourth proportional to 21,106.86, 31,645.53 and 9,254.94 is: 13,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.86 : 31,645.53 = 9,254.94 : x
  2. Step 2: Convert to fraction form
    21,106.86/31,645.53 = 9,254.94/x
  3. Step 3: Cross multiply
    21,106.86x = 31,645.53 × 9,254.94
  4. Step 4: Simplify right side
    21,106.86x = 292,877,481.42
  5. Step 5: Solve for x
    x = 292,877,481.42/21,106.86
  6. Step 6: Final answer
    x = 13,875.94

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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.