Home / 14,421.36-21,623.28-5,645.76

Finding the Fourth Proportional to 14,421.36, 21,623.28 and 5,645.76

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Solution

The fourth proportional to 14,421.36, 21,623.28 and 5,645.76 is: 8,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.36 : 21,623.28 = 5,645.76 : x
  2. Step 2: Convert to fraction form
    14,421.36/21,623.28 = 5,645.76/x
  3. Step 3: Cross multiply
    14,421.36x = 21,623.28 × 5,645.76
  4. Step 4: Simplify right side
    14,421.36x = 122,079,849.29
  5. Step 5: Solve for x
    x = 122,079,849.29/14,421.36
  6. Step 6: Final answer
    x = 8,465.21

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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.