Home / 30,342.40-45,510.34-10,621.32

Finding the Fourth Proportional to 30,342.40, 45,510.34 and 10,621.32

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Solution

The fourth proportional to 30,342.40, 45,510.34 and 10,621.32 is: 15,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342.40 : 45,510.34 = 10,621.32 : x
  2. Step 2: Convert to fraction form
    30,342.40/45,510.34 = 10,621.32/x
  3. Step 3: Cross multiply
    30,342.40x = 45,510.34 × 10,621.32
  4. Step 4: Simplify right side
    30,342.40x = 483,379,884.45
  5. Step 5: Solve for x
    x = 483,379,884.45/30,342.40
  6. Step 6: Final answer
    x = 15,930.84

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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.