Home / 19,317.28-28,938.48-10,972.12

Finding the Fourth Proportional to 19,317.28, 28,938.48 and 10,972.12

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Solution

The fourth proportional to 19,317.28, 28,938.48 and 10,972.12 is: 16,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,317.28 : 28,938.48 = 10,972.12 : x
  2. Step 2: Convert to fraction form
    19,317.28/28,938.48 = 10,972.12/x
  3. Step 3: Cross multiply
    19,317.28x = 28,938.48 × 10,972.12
  4. Step 4: Simplify right side
    19,317.28x = 317,516,475.18
  5. Step 5: Solve for x
    x = 317,516,475.18/19,317.28
  6. Step 6: Final answer
    x = 16,436.91

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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.