Home / 20,866.41-28,795.65-11,434.98

Finding the Fourth Proportional to 20,866.41, 28,795.65 and 11,434.98

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Solution

The fourth proportional to 20,866.41, 28,795.65 and 11,434.98 is: 15,780.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.41 : 28,795.65 = 11,434.98 : x
  2. Step 2: Convert to fraction form
    20,866.41/28,795.65 = 11,434.98/x
  3. Step 3: Cross multiply
    20,866.41x = 28,795.65 × 11,434.98
  4. Step 4: Simplify right side
    20,866.41x = 329,277,681.84
  5. Step 5: Solve for x
    x = 329,277,681.84/20,866.41
  6. Step 6: Final answer
    x = 15,780.27

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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.