Home / 30,442.47-45,589.89-21,056.15

Finding the Fourth Proportional to 30,442.47, 45,589.89 and 21,056.15

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Solution

The fourth proportional to 30,442.47, 45,589.89 and 21,056.15 is: 31,533.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,442.47 : 45,589.89 = 21,056.15 : x
  2. Step 2: Convert to fraction form
    30,442.47/45,589.89 = 21,056.15/x
  3. Step 3: Cross multiply
    30,442.47x = 45,589.89 × 21,056.15
  4. Step 4: Simplify right side
    30,442.47x = 959,947,334.37
  5. Step 5: Solve for x
    x = 959,947,334.37/30,442.47
  6. Step 6: Final answer
    x = 31,533.16

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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.