Home / 30,133.28-45,070.76-21,718.80

Finding the Fourth Proportional to 30,133.28, 45,070.76 and 21,718.80

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Solution

The fourth proportional to 30,133.28, 45,070.76 and 21,718.80 is: 32,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,133.28 : 45,070.76 = 21,718.80 : x
  2. Step 2: Convert to fraction form
    30,133.28/45,070.76 = 21,718.80/x
  3. Step 3: Cross multiply
    30,133.28x = 45,070.76 × 21,718.80
  4. Step 4: Simplify right side
    30,133.28x = 978,882,822.29
  5. Step 5: Solve for x
    x = 978,882,822.29/30,133.28
  6. Step 6: Final answer
    x = 32,485.11

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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.