Home / 14,080.50-21,120.75-5,313.40

Finding the Fourth Proportional to 14,080.50, 21,120.75 and 5,313.40

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Solution

The fourth proportional to 14,080.50, 21,120.75 and 5,313.40 is: 7,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080.50 : 21,120.75 = 5,313.40 : x
  2. Step 2: Convert to fraction form
    14,080.50/21,120.75 = 5,313.40/x
  3. Step 3: Cross multiply
    14,080.50x = 21,120.75 × 5,313.40
  4. Step 4: Simplify right side
    14,080.50x = 112,222,940.25
  5. Step 5: Solve for x
    x = 112,222,940.25/14,080.50
  6. Step 6: Final answer
    x = 7,970.10

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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.