Home / 21,247.65-31,871.48-16,818.98

Finding the Fourth Proportional to 21,247.65, 31,871.48 and 16,818.98

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Solution

The fourth proportional to 21,247.65, 31,871.48 and 16,818.98 is: 25,228.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.65 : 31,871.48 = 16,818.98 : x
  2. Step 2: Convert to fraction form
    21,247.65/31,871.48 = 16,818.98/x
  3. Step 3: Cross multiply
    21,247.65x = 31,871.48 × 16,818.98
  4. Step 4: Simplify right side
    21,247.65x = 536,045,541.24
  5. Step 5: Solve for x
    x = 536,045,541.24/21,247.65
  6. Step 6: Final answer
    x = 25,228.46

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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.