Home / 21,316.83-29,426.82-15,641.55

Finding the Fourth Proportional to 21,316.83, 29,426.82 and 15,641.55

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Solution

The fourth proportional to 21,316.83, 29,426.82 and 15,641.55 is: 21,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.83 : 29,426.82 = 15,641.55 : x
  2. Step 2: Convert to fraction form
    21,316.83/29,426.82 = 15,641.55/x
  3. Step 3: Cross multiply
    21,316.83x = 29,426.82 × 15,641.55
  4. Step 4: Simplify right side
    21,316.83x = 460,281,076.37
  5. Step 5: Solve for x
    x = 460,281,076.37/21,316.83
  6. Step 6: Final answer
    x = 21,592.38

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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.