Home / 13,822.08-20,720.85-5,386.63

Finding the Fourth Proportional to 13,822.08, 20,720.85 and 5,386.63

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Solution

The fourth proportional to 13,822.08, 20,720.85 and 5,386.63 is: 8,075.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,822.08 : 20,720.85 = 5,386.63 : x
  2. Step 2: Convert to fraction form
    13,822.08/20,720.85 = 5,386.63/x
  3. Step 3: Cross multiply
    13,822.08x = 20,720.85 × 5,386.63
  4. Step 4: Simplify right side
    13,822.08x = 111,615,590.57
  5. Step 5: Solve for x
    x = 111,615,590.57/13,822.08
  6. Step 6: Final answer
    x = 8,075.16

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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.