Home / 15,570.51-21,487.32-8,857.23

Finding the Fourth Proportional to 15,570.51, 21,487.32 and 8,857.23

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Solution

The fourth proportional to 15,570.51, 21,487.32 and 8,857.23 is: 12,222.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,570.51 : 21,487.32 = 8,857.23 : x
  2. Step 2: Convert to fraction form
    15,570.51/21,487.32 = 8,857.23/x
  3. Step 3: Cross multiply
    15,570.51x = 21,487.32 × 8,857.23
  4. Step 4: Simplify right side
    15,570.51x = 190,318,135.32
  5. Step 5: Solve for x
    x = 190,318,135.32/15,570.51
  6. Step 6: Final answer
    x = 12,222.99

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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.