Home / 19,792.40-29,690.60-7,315.76

Finding the Fourth Proportional to 19,792.40, 29,690.60 and 7,315.76

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Solution

The fourth proportional to 19,792.40, 29,690.60 and 7,315.76 is: 10,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,792.40 : 29,690.60 = 7,315.76 : x
  2. Step 2: Convert to fraction form
    19,792.40/29,690.60 = 7,315.76/x
  3. Step 3: Cross multiply
    19,792.40x = 29,690.60 × 7,315.76
  4. Step 4: Simplify right side
    19,792.40x = 217,209,303.86
  5. Step 5: Solve for x
    x = 217,209,303.86/19,792.40
  6. Step 6: Final answer
    x = 10,974.38

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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.