Home / 20,123.30-30,184.95-7,643.33

Finding the Fourth Proportional to 20,123.30, 30,184.95 and 7,643.33

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Solution

The fourth proportional to 20,123.30, 30,184.95 and 7,643.33 is: 11,465.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.30 : 30,184.95 = 7,643.33 : x
  2. Step 2: Convert to fraction form
    20,123.30/30,184.95 = 7,643.33/x
  3. Step 3: Cross multiply
    20,123.30x = 30,184.95 × 7,643.33
  4. Step 4: Simplify right side
    20,123.30x = 230,713,533.88
  5. Step 5: Solve for x
    x = 230,713,533.88/20,123.30
  6. Step 6: Final answer
    x = 11,465.00

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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.