Home / 30,242.12-45,362.46-21,320.60

Finding the Fourth Proportional to 30,242.12, 45,362.46 and 21,320.60

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Solution

The fourth proportional to 30,242.12, 45,362.46 and 21,320.60 is: 31,980.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,242.12 : 45,362.46 = 21,320.60 : x
  2. Step 2: Convert to fraction form
    30,242.12/45,362.46 = 21,320.60/x
  3. Step 3: Cross multiply
    30,242.12x = 45,362.46 × 21,320.60
  4. Step 4: Simplify right side
    30,242.12x = 967,154,864.68
  5. Step 5: Solve for x
    x = 967,154,864.68/30,242.12
  6. Step 6: Final answer
    x = 31,980.39

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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.