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Finding the Fourth Proportional to 15,970.65, 22,039.52 and 8,897.32

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Solution

The fourth proportional to 15,970.65, 22,039.52 and 8,897.32 is: 12,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,970.65 : 22,039.52 = 8,897.32 : x
  2. Step 2: Convert to fraction form
    15,970.65/22,039.52 = 8,897.32/x
  3. Step 3: Cross multiply
    15,970.65x = 22,039.52 × 8,897.32
  4. Step 4: Simplify right side
    15,970.65x = 196,092,662.09
  5. Step 5: Solve for x
    x = 196,092,662.09/15,970.65
  6. Step 6: Final answer
    x = 12,278.31

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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.