Home / 28,220.22-38,946.63-15,648.06

Finding the Fourth Proportional to 28,220.22, 38,946.63 and 15,648.06

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Solution

The fourth proportional to 28,220.22, 38,946.63 and 15,648.06 is: 21,595.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.22 : 38,946.63 = 15,648.06 : x
  2. Step 2: Convert to fraction form
    28,220.22/38,946.63 = 15,648.06/x
  3. Step 3: Cross multiply
    28,220.22x = 38,946.63 × 15,648.06
  4. Step 4: Simplify right side
    28,220.22x = 609,439,203.04
  5. Step 5: Solve for x
    x = 609,439,203.04/28,220.22
  6. Step 6: Final answer
    x = 21,595.83

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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.