Home / 21,051.63-29,040.12-15,377.58

Finding the Fourth Proportional to 21,051.63, 29,040.12 and 15,377.58

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Solution

The fourth proportional to 21,051.63, 29,040.12 and 15,377.58 is: 21,212.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.63 : 29,040.12 = 15,377.58 : x
  2. Step 2: Convert to fraction form
    21,051.63/29,040.12 = 15,377.58/x
  3. Step 3: Cross multiply
    21,051.63x = 29,040.12 × 15,377.58
  4. Step 4: Simplify right side
    21,051.63x = 446,566,768.51
  5. Step 5: Solve for x
    x = 446,566,768.51/21,051.63
  6. Step 6: Final answer
    x = 21,212.93

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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.