Home / 21,763.72-30,024.03-15,390.64

Finding the Fourth Proportional to 21,763.72, 30,024.03 and 15,390.64

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Solution

The fourth proportional to 21,763.72, 30,024.03 and 15,390.64 is: 21,232.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.72 : 30,024.03 = 15,390.64 : x
  2. Step 2: Convert to fraction form
    21,763.72/30,024.03 = 15,390.64/x
  3. Step 3: Cross multiply
    21,763.72x = 30,024.03 × 15,390.64
  4. Step 4: Simplify right side
    21,763.72x = 462,089,037.08
  5. Step 5: Solve for x
    x = 462,089,037.08/21,763.72
  6. Step 6: Final answer
    x = 21,232.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.