Home / 21,212.23-29,271.16-12,260.31

Finding the Fourth Proportional to 21,212.23, 29,271.16 and 12,260.31

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Solution

The fourth proportional to 21,212.23, 29,271.16 and 12,260.31 is: 16,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.23 : 29,271.16 = 12,260.31 : x
  2. Step 2: Convert to fraction form
    21,212.23/29,271.16 = 12,260.31/x
  3. Step 3: Cross multiply
    21,212.23x = 29,271.16 × 12,260.31
  4. Step 4: Simplify right side
    21,212.23x = 358,873,510.98
  5. Step 5: Solve for x
    x = 358,873,510.98/21,212.23
  6. Step 6: Final answer
    x = 16,918.24

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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.