Home / 15,240.40-21,031.50-8,868.22

Finding the Fourth Proportional to 15,240.40, 21,031.50 and 8,868.22

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Solution

The fourth proportional to 15,240.40, 21,031.50 and 8,868.22 is: 12,238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,240.40 : 21,031.50 = 8,868.22 : x
  2. Step 2: Convert to fraction form
    15,240.40/21,031.50 = 8,868.22/x
  3. Step 3: Cross multiply
    15,240.40x = 21,031.50 × 8,868.22
  4. Step 4: Simplify right side
    15,240.40x = 186,511,968.93
  5. Step 5: Solve for x
    x = 186,511,968.93/15,240.40
  6. Step 6: Final answer
    x = 12,238.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.