Home / 20,358.02-30,491.91-15,643.32

Finding the Fourth Proportional to 20,358.02, 30,491.91 and 15,643.32

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Solution

The fourth proportional to 20,358.02, 30,491.91 and 15,643.32 is: 23,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.02 : 30,491.91 = 15,643.32 : x
  2. Step 2: Convert to fraction form
    20,358.02/30,491.91 = 15,643.32/x
  3. Step 3: Cross multiply
    20,358.02x = 30,491.91 × 15,643.32
  4. Step 4: Simplify right side
    20,358.02x = 476,994,820.88
  5. Step 5: Solve for x
    x = 476,994,820.88/20,358.02
  6. Step 6: Final answer
    x = 23,430.32

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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.