Home / 30,878.28-46,255.38-14,215.20

Finding the Fourth Proportional to 30,878.28, 46,255.38 and 14,215.20

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Solution

The fourth proportional to 30,878.28, 46,255.38 and 14,215.20 is: 21,294.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,878.28 : 46,255.38 = 14,215.20 : x
  2. Step 2: Convert to fraction form
    30,878.28/46,255.38 = 14,215.20/x
  3. Step 3: Cross multiply
    30,878.28x = 46,255.38 × 14,215.20
  4. Step 4: Simplify right side
    30,878.28x = 657,529,477.78
  5. Step 5: Solve for x
    x = 657,529,477.78/30,878.28
  6. Step 6: Final answer
    x = 21,294.24

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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.