Home / 28,060.71-38,724-15,313.99

Finding the Fourth Proportional to 28,060.71, 38,724 and 15,313.99

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Solution

The fourth proportional to 28,060.71, 38,724 and 15,313.99 is: 21,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,060.71 : 38,724 = 15,313.99 : x
  2. Step 2: Convert to fraction form
    28,060.71/38,724 = 15,313.99/x
  3. Step 3: Cross multiply
    28,060.71x = 38,724 × 15,313.99
  4. Step 4: Simplify right side
    28,060.71x = 593,018,948.76
  5. Step 5: Solve for x
    x = 593,018,948.76/28,060.71
  6. Step 6: Final answer
    x = 21,133.43

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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.