Home / 20,938.81-28,865.67-14,968.30

Finding the Fourth Proportional to 20,938.81, 28,865.67 and 14,968.30

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Solution

The fourth proportional to 20,938.81, 28,865.67 and 14,968.30 is: 20,634.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.81 : 28,865.67 = 14,968.30 : x
  2. Step 2: Convert to fraction form
    20,938.81/28,865.67 = 14,968.30/x
  3. Step 3: Cross multiply
    20,938.81x = 28,865.67 × 14,968.30
  4. Step 4: Simplify right side
    20,938.81x = 432,070,008.26
  5. Step 5: Solve for x
    x = 432,070,008.26/20,938.81
  6. Step 6: Final answer
    x = 20,634.89

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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.