Home / 14,307.20-21,459.36-3,920.48

Finding the Fourth Proportional to 14,307.20, 21,459.36 and 3,920.48

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Solution

The fourth proportional to 14,307.20, 21,459.36 and 3,920.48 is: 5,880.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,307.20 : 21,459.36 = 3,920.48 : x
  2. Step 2: Convert to fraction form
    14,307.20/21,459.36 = 3,920.48/x
  3. Step 3: Cross multiply
    14,307.20x = 21,459.36 × 3,920.48
  4. Step 4: Simplify right side
    14,307.20x = 84,130,991.69
  5. Step 5: Solve for x
    x = 84,130,991.69/14,307.20
  6. Step 6: Final answer
    x = 5,880.33

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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.