Home / 28,220.98-38,946.71-15,645.73

Finding the Fourth Proportional to 28,220.98, 38,946.71 and 15,645.73

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Solution

The fourth proportional to 28,220.98, 38,946.71 and 15,645.73 is: 21,592.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.98 : 38,946.71 = 15,645.73 : x
  2. Step 2: Convert to fraction form
    28,220.98/38,946.71 = 15,645.73/x
  3. Step 3: Cross multiply
    28,220.98x = 38,946.71 × 15,645.73
  4. Step 4: Simplify right side
    28,220.98x = 609,349,533.45
  5. Step 5: Solve for x
    x = 609,349,533.45/28,220.98
  6. Step 6: Final answer
    x = 21,592.08

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Double scale
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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.