Home / 13,980.10-20,969.47-5,214.34

Finding the Fourth Proportional to 13,980.10, 20,969.47 and 5,214.34

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Solution

The fourth proportional to 13,980.10, 20,969.47 and 5,214.34 is: 7,821.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.10 : 20,969.47 = 5,214.34 : x
  2. Step 2: Convert to fraction form
    13,980.10/20,969.47 = 5,214.34/x
  3. Step 3: Cross multiply
    13,980.10x = 20,969.47 × 5,214.34
  4. Step 4: Simplify right side
    13,980.10x = 109,341,946.20
  5. Step 5: Solve for x
    x = 109,341,946.20/13,980.10
  6. Step 6: Final answer
    x = 7,821.26

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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.