Home / 14,192.79-21,294.05-5,430.21

Finding the Fourth Proportional to 14,192.79, 21,294.05 and 5,430.21

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Solution

The fourth proportional to 14,192.79, 21,294.05 and 5,430.21 is: 8,147.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,192.79 : 21,294.05 = 5,430.21 : x
  2. Step 2: Convert to fraction form
    14,192.79/21,294.05 = 5,430.21/x
  3. Step 3: Cross multiply
    14,192.79x = 21,294.05 × 5,430.21
  4. Step 4: Simplify right side
    14,192.79x = 115,631,163.25
  5. Step 5: Solve for x
    x = 115,631,163.25/14,192.79
  6. Step 6: Final answer
    x = 8,147.18

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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.