Home / 30,020.38-45,031.48-10,298.65

Finding the Fourth Proportional to 30,020.38, 45,031.48 and 10,298.65

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Solution

The fourth proportional to 30,020.38, 45,031.48 and 10,298.65 is: 15,448.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,020.38 : 45,031.48 = 10,298.65 : x
  2. Step 2: Convert to fraction form
    30,020.38/45,031.48 = 10,298.65/x
  3. Step 3: Cross multiply
    30,020.38x = 45,031.48 × 10,298.65
  4. Step 4: Simplify right side
    30,020.38x = 463,763,313.18
  5. Step 5: Solve for x
    x = 463,763,313.18/30,020.38
  6. Step 6: Final answer
    x = 15,448.28

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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.