Home / 19,281.42-28,938.51-13,748.31

Finding the Fourth Proportional to 19,281.42, 28,938.51 and 13,748.31

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Solution

The fourth proportional to 19,281.42, 28,938.51 and 13,748.31 is: 20,634.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,281.42 : 28,938.51 = 13,748.31 : x
  2. Step 2: Convert to fraction form
    19,281.42/28,938.51 = 13,748.31/x
  3. Step 3: Cross multiply
    19,281.42x = 28,938.51 × 13,748.31
  4. Step 4: Simplify right side
    19,281.42x = 397,855,606.42
  5. Step 5: Solve for x
    x = 397,855,606.42/19,281.42
  6. Step 6: Final answer
    x = 20,634.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.