Home / 30,031.16-45,047.87-8,971.48

Finding the Fourth Proportional to 30,031.16, 45,047.87 and 8,971.48

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Solution

The fourth proportional to 30,031.16, 45,047.87 and 8,971.48 is: 13,457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,031.16 : 45,047.87 = 8,971.48 : x
  2. Step 2: Convert to fraction form
    30,031.16/45,047.87 = 8,971.48/x
  3. Step 3: Cross multiply
    30,031.16x = 45,047.87 × 8,971.48
  4. Step 4: Simplify right side
    30,031.16x = 404,146,261.77
  5. Step 5: Solve for x
    x = 404,146,261.77/30,031.16
  6. Step 6: Final answer
    x = 13,457.57

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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.