Home / 21,325.74-29,420.01-12,368.05

Finding the Fourth Proportional to 21,325.74, 29,420.01 and 12,368.05

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Solution

The fourth proportional to 21,325.74, 29,420.01 and 12,368.05 is: 17,062.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.74 : 29,420.01 = 12,368.05 : x
  2. Step 2: Convert to fraction form
    21,325.74/29,420.01 = 12,368.05/x
  3. Step 3: Cross multiply
    21,325.74x = 29,420.01 × 12,368.05
  4. Step 4: Simplify right side
    21,325.74x = 363,867,945.74
  5. Step 5: Solve for x
    x = 363,867,945.74/21,325.74
  6. Step 6: Final answer
    x = 17,062.39

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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.