Home / 30,020.78-45,032.08-10,299.05

Finding the Fourth Proportional to 30,020.78, 45,032.08 and 10,299.05

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Solution

The fourth proportional to 30,020.78, 45,032.08 and 10,299.05 is: 15,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,020.78 : 45,032.08 = 10,299.05 : x
  2. Step 2: Convert to fraction form
    30,020.78/45,032.08 = 10,299.05/x
  3. Step 3: Cross multiply
    30,020.78x = 45,032.08 × 10,299.05
  4. Step 4: Simplify right side
    30,020.78x = 463,787,730.36
  5. Step 5: Solve for x
    x = 463,787,730.36/30,020.78
  6. Step 6: Final answer
    x = 15,448.89

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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.