Home / 21,483.76-29,632.64-15,123.60

Finding the Fourth Proportional to 21,483.76, 29,632.64 and 15,123.60

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Solution

The fourth proportional to 21,483.76, 29,632.64 and 15,123.60 is: 20,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,483.76 : 29,632.64 = 15,123.60 : x
  2. Step 2: Convert to fraction form
    21,483.76/29,632.64 = 15,123.60/x
  3. Step 3: Cross multiply
    21,483.76x = 29,632.64 × 15,123.60
  4. Step 4: Simplify right side
    21,483.76x = 448,152,194.30
  5. Step 5: Solve for x
    x = 448,152,194.30/21,483.76
  6. Step 6: Final answer
    x = 20,860.04

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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.