Home / 21,001.48-28,986.24-12,055.03

Finding the Fourth Proportional to 21,001.48, 28,986.24 and 12,055.03

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Solution

The fourth proportional to 21,001.48, 28,986.24 and 12,055.03 is: 16,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.48 : 28,986.24 = 12,055.03 : x
  2. Step 2: Convert to fraction form
    21,001.48/28,986.24 = 12,055.03/x
  3. Step 3: Cross multiply
    21,001.48x = 28,986.24 × 12,055.03
  4. Step 4: Simplify right side
    21,001.48x = 349,429,992.79
  5. Step 5: Solve for x
    x = 349,429,992.79/21,001.48
  6. Step 6: Final answer
    x = 16,638.35

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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.