Home / 22,986.84-31,720.80-13,553.64

Finding the Fourth Proportional to 22,986.84, 31,720.80 and 13,553.64

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Solution

The fourth proportional to 22,986.84, 31,720.80 and 13,553.64 is: 18,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,986.84 : 31,720.80 = 13,553.64 : x
  2. Step 2: Convert to fraction form
    22,986.84/31,720.80 = 13,553.64/x
  3. Step 3: Cross multiply
    22,986.84x = 31,720.80 × 13,553.64
  4. Step 4: Simplify right side
    22,986.84x = 429,932,303.71
  5. Step 5: Solve for x
    x = 429,932,303.71/22,986.84
  6. Step 6: Final answer
    x = 18,703.41

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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.