Home / 30,019.48-45,031.78-8,958.16

Finding the Fourth Proportional to 30,019.48, 45,031.78 and 8,958.16

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Solution

The fourth proportional to 30,019.48, 45,031.78 and 8,958.16 is: 13,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,019.48 : 45,031.78 = 8,958.16 : x
  2. Step 2: Convert to fraction form
    30,019.48/45,031.78 = 8,958.16/x
  3. Step 3: Cross multiply
    30,019.48x = 45,031.78 × 8,958.16
  4. Step 4: Simplify right side
    30,019.48x = 403,401,957.81
  5. Step 5: Solve for x
    x = 403,401,957.81/30,019.48
  6. Step 6: Final answer
    x = 13,438.01

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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.