Home / 20,813,063.72-28,718,601.54-13,072,592.36

Finding the Fourth Proportional to 20,813,063.72, 28,718,601.54 and 13,072,592.36

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Solution

The fourth proportional to 20,813,063.72, 28,718,601.54 and 13,072,592.36 is: 18,038,025.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813,063.72 : 28,718,601.54 = 13,072,592.36 : x
  2. Step 2: Convert to fraction form
    20,813,063.72/28,718,601.54 = 13,072,592.36/x
  3. Step 3: Cross multiply
    20,813,063.72x = 28,718,601.54 × 13,072,592.36
  4. Step 4: Simplify right side
    20,813,063.72x = 375,426,571,081,688.19
  5. Step 5: Solve for x
    x = 375,426,571,081,688.19/20,813,063.72
  6. Step 6: Final answer
    x = 18,038,025.35

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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.