Home / 21,362.47-29,483.60-11,931.03

Finding the Fourth Proportional to 21,362.47, 29,483.60 and 11,931.03

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Solution

The fourth proportional to 21,362.47, 29,483.60 and 11,931.03 is: 16,466.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,362.47 : 29,483.60 = 11,931.03 : x
  2. Step 2: Convert to fraction form
    21,362.47/29,483.60 = 11,931.03/x
  3. Step 3: Cross multiply
    21,362.47x = 29,483.60 × 11,931.03
  4. Step 4: Simplify right side
    21,362.47x = 351,769,656.45
  5. Step 5: Solve for x
    x = 351,769,656.45/21,362.47
  6. Step 6: Final answer
    x = 16,466.71

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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.