Home / 30,007.11-45,012.86-10,285.50

Finding the Fourth Proportional to 30,007.11, 45,012.86 and 10,285.50

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Solution

The fourth proportional to 30,007.11, 45,012.86 and 10,285.50 is: 15,429.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,007.11 : 45,012.86 = 10,285.50 : x
  2. Step 2: Convert to fraction form
    30,007.11/45,012.86 = 10,285.50/x
  3. Step 3: Cross multiply
    30,007.11x = 45,012.86 × 10,285.50
  4. Step 4: Simplify right side
    30,007.11x = 462,979,771.53
  5. Step 5: Solve for x
    x = 462,979,771.53/30,007.11
  6. Step 6: Final answer
    x = 15,429.00

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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.