Home / 21,036.79-29,030.76-11,605.36

Finding the Fourth Proportional to 21,036.79, 29,030.76 and 11,605.36

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Solution

The fourth proportional to 21,036.79, 29,030.76 and 11,605.36 is: 16,015.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.79 : 29,030.76 = 11,605.36 : x
  2. Step 2: Convert to fraction form
    21,036.79/29,030.76 = 11,605.36/x
  3. Step 3: Cross multiply
    21,036.79x = 29,030.76 × 11,605.36
  4. Step 4: Simplify right side
    21,036.79x = 336,912,420.87
  5. Step 5: Solve for x
    x = 336,912,420.87/21,036.79
  6. Step 6: Final answer
    x = 16,015.39

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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.