Home / 20,916.09-28,842.06-14,945.58

Finding the Fourth Proportional to 20,916.09, 28,842.06 and 14,945.58

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Solution

The fourth proportional to 20,916.09, 28,842.06 and 14,945.58 is: 20,609.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.09 : 28,842.06 = 14,945.58 : x
  2. Step 2: Convert to fraction form
    20,916.09/28,842.06 = 14,945.58/x
  3. Step 3: Cross multiply
    20,916.09x = 28,842.06 × 14,945.58
  4. Step 4: Simplify right side
    20,916.09x = 431,061,315.09
  5. Step 5: Solve for x
    x = 431,061,315.09/20,916.09
  6. Step 6: Final answer
    x = 20,609.08

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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.