Home / 30,720.24-46,119.72-20,903.28

Finding the Fourth Proportional to 30,720.24, 46,119.72 and 20,903.28

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Solution

The fourth proportional to 30,720.24, 46,119.72 and 20,903.28 is: 31,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.24 : 46,119.72 = 20,903.28 : x
  2. Step 2: Convert to fraction form
    30,720.24/46,119.72 = 20,903.28/x
  3. Step 3: Cross multiply
    30,720.24x = 46,119.72 × 20,903.28
  4. Step 4: Simplify right side
    30,720.24x = 964,053,420.68
  5. Step 5: Solve for x
    x = 964,053,420.68/30,720.24
  6. Step 6: Final answer
    x = 31,381.70

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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.