Home / 21,107.76-29,130.75-14,036.46

Finding the Fourth Proportional to 21,107.76, 29,130.75 and 14,036.46

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Solution

The fourth proportional to 21,107.76, 29,130.75 and 14,036.46 is: 19,371.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.76 : 29,130.75 = 14,036.46 : x
  2. Step 2: Convert to fraction form
    21,107.76/29,130.75 = 14,036.46/x
  3. Step 3: Cross multiply
    21,107.76x = 29,130.75 × 14,036.46
  4. Step 4: Simplify right side
    21,107.76x = 408,892,607.15
  5. Step 5: Solve for x
    x = 408,892,607.15/21,107.76
  6. Step 6: Final answer
    x = 19,371.67

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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.