Home / 21,313.32-29,416.14-13,362.36

Finding the Fourth Proportional to 21,313.32, 29,416.14 and 13,362.36

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Solution

The fourth proportional to 21,313.32, 29,416.14 and 13,362.36 is: 18,442.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.32 : 29,416.14 = 13,362.36 : x
  2. Step 2: Convert to fraction form
    21,313.32/29,416.14 = 13,362.36/x
  3. Step 3: Cross multiply
    21,313.32x = 29,416.14 × 13,362.36
  4. Step 4: Simplify right side
    21,313.32x = 393,069,052.49
  5. Step 5: Solve for x
    x = 393,069,052.49/21,313.32
  6. Step 6: Final answer
    x = 18,442.41

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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.