Home / 14,091.60-21,142.80-13,870.20

Finding the Fourth Proportional to 14,091.60, 21,142.80 and 13,870.20

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Solution

The fourth proportional to 14,091.60, 21,142.80 and 13,870.20 is: 20,810.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,091.60 : 21,142.80 = 13,870.20 : x
  2. Step 2: Convert to fraction form
    14,091.60/21,142.80 = 13,870.20/x
  3. Step 3: Cross multiply
    14,091.60x = 21,142.80 × 13,870.20
  4. Step 4: Simplify right side
    14,091.60x = 293,254,864.56
  5. Step 5: Solve for x
    x = 293,254,864.56/14,091.60
  6. Step 6: Final answer
    x = 20,810.62

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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.