Home / 21,051.45-29,035.80-14,325.21

Finding the Fourth Proportional to 21,051.45, 29,035.80 and 14,325.21

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Solution

The fourth proportional to 21,051.45, 29,035.80 and 14,325.21 is: 19,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.45 : 29,035.80 = 14,325.21 : x
  2. Step 2: Convert to fraction form
    21,051.45/29,035.80 = 14,325.21/x
  3. Step 3: Cross multiply
    21,051.45x = 29,035.80 × 14,325.21
  4. Step 4: Simplify right side
    21,051.45x = 415,943,932.52
  5. Step 5: Solve for x
    x = 415,943,932.52/21,051.45
  6. Step 6: Final answer
    x = 19,758.45

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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.