Home / 14,370.40-21,428.69-12,622.56

Finding the Fourth Proportional to 14,370.40, 21,428.69 and 12,622.56

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Solution

The fourth proportional to 14,370.40, 21,428.69 and 12,622.56 is: 18,822.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,370.40 : 21,428.69 = 12,622.56 : x
  2. Step 2: Convert to fraction form
    14,370.40/21,428.69 = 12,622.56/x
  3. Step 3: Cross multiply
    14,370.40x = 21,428.69 × 12,622.56
  4. Step 4: Simplify right side
    14,370.40x = 270,484,925.25
  5. Step 5: Solve for x
    x = 270,484,925.25/14,370.40
  6. Step 6: Final answer
    x = 18,822.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.