Home / 19,312.16-28,967.88-12,972.56

Finding the Fourth Proportional to 19,312.16, 28,967.88 and 12,972.56

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Solution

The fourth proportional to 19,312.16, 28,967.88 and 12,972.56 is: 19,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312.16 : 28,967.88 = 12,972.56 : x
  2. Step 2: Convert to fraction form
    19,312.16/28,967.88 = 12,972.56/x
  3. Step 3: Cross multiply
    19,312.16x = 28,967.88 × 12,972.56
  4. Step 4: Simplify right side
    19,312.16x = 375,787,561.37
  5. Step 5: Solve for x
    x = 375,787,561.37/19,312.16
  6. Step 6: Final answer
    x = 19,458.60

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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.