Home / 30,001.18-45,009.98-13,131.13

Finding the Fourth Proportional to 30,001.18, 45,009.98 and 13,131.13

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Solution

The fourth proportional to 30,001.18, 45,009.98 and 13,131.13 is: 19,700.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,001.18 : 45,009.98 = 13,131.13 : x
  2. Step 2: Convert to fraction form
    30,001.18/45,009.98 = 13,131.13/x
  3. Step 3: Cross multiply
    30,001.18x = 45,009.98 × 13,131.13
  4. Step 4: Simplify right side
    30,001.18x = 591,031,898.68
  5. Step 5: Solve for x
    x = 591,031,898.68/30,001.18
  6. Step 6: Final answer
    x = 19,700.29

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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.