Home / 30,259.45-45,412.80-20,964.70

Finding the Fourth Proportional to 30,259.45, 45,412.80 and 20,964.70

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Solution

The fourth proportional to 30,259.45, 45,412.80 and 20,964.70 is: 31,463.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,259.45 : 45,412.80 = 20,964.70 : x
  2. Step 2: Convert to fraction form
    30,259.45/45,412.80 = 20,964.70/x
  3. Step 3: Cross multiply
    30,259.45x = 45,412.80 × 20,964.70
  4. Step 4: Simplify right side
    30,259.45x = 952,065,728.16
  5. Step 5: Solve for x
    x = 952,065,728.16/30,259.45
  6. Step 6: Final answer
    x = 31,463.42

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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.