Home / 30,643.32-45,941.58-13,991.79

Finding the Fourth Proportional to 30,643.32, 45,941.58 and 13,991.79

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Solution

The fourth proportional to 30,643.32, 45,941.58 and 13,991.79 is: 20,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643.32 : 45,941.58 = 13,991.79 : x
  2. Step 2: Convert to fraction form
    30,643.32/45,941.58 = 13,991.79/x
  3. Step 3: Cross multiply
    30,643.32x = 45,941.58 × 13,991.79
  4. Step 4: Simplify right side
    30,643.32x = 642,804,939.63
  5. Step 5: Solve for x
    x = 642,804,939.63/30,643.32
  6. Step 6: Final answer
    x = 20,977.00

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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.