Home / 14,155.09-21,212.52-10,428.01

Finding the Fourth Proportional to 14,155.09, 21,212.52 and 10,428.01

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Solution

The fourth proportional to 14,155.09, 21,212.52 and 10,428.01 is: 15,627.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,155.09 : 21,212.52 = 10,428.01 : x
  2. Step 2: Convert to fraction form
    14,155.09/21,212.52 = 10,428.01/x
  3. Step 3: Cross multiply
    14,155.09x = 21,212.52 × 10,428.01
  4. Step 4: Simplify right side
    14,155.09x = 221,204,370.69
  5. Step 5: Solve for x
    x = 221,204,370.69/14,155.09
  6. Step 6: Final answer
    x = 15,627.20

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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.