Home / 30,020.63-45,031.85-10,298.90

Finding the Fourth Proportional to 30,020.63, 45,031.85 and 10,298.90

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Solution

The fourth proportional to 30,020.63, 45,031.85 and 10,298.90 is: 15,448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,020.63 : 45,031.85 = 10,298.90 : x
  2. Step 2: Convert to fraction form
    30,020.63/45,031.85 = 10,298.90/x
  3. Step 3: Cross multiply
    30,020.63x = 45,031.85 × 10,298.90
  4. Step 4: Simplify right side
    30,020.63x = 463,778,519.97
  5. Step 5: Solve for x
    x = 463,778,519.97/30,020.63
  6. Step 6: Final answer
    x = 15,448.66

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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.