Home / 21,157.65-29,202.75-12,210.48

Finding the Fourth Proportional to 21,157.65, 29,202.75 and 12,210.48

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Solution

The fourth proportional to 21,157.65, 29,202.75 and 12,210.48 is: 16,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.65 : 29,202.75 = 12,210.48 : x
  2. Step 2: Convert to fraction form
    21,157.65/29,202.75 = 12,210.48/x
  3. Step 3: Cross multiply
    21,157.65x = 29,202.75 × 12,210.48
  4. Step 4: Simplify right side
    21,157.65x = 356,579,594.82
  5. Step 5: Solve for x
    x = 356,579,594.82/21,157.65
  6. Step 6: Final answer
    x = 16,853.46

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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.