Home / 19,870.86-29,806.27-7,390.60

Finding the Fourth Proportional to 19,870.86, 29,806.27 and 7,390.60

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Solution

The fourth proportional to 19,870.86, 29,806.27 and 7,390.60 is: 11,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.86 : 29,806.27 = 7,390.60 : x
  2. Step 2: Convert to fraction form
    19,870.86/29,806.27 = 7,390.60/x
  3. Step 3: Cross multiply
    19,870.86x = 29,806.27 × 7,390.60
  4. Step 4: Simplify right side
    19,870.86x = 220,286,219.06
  5. Step 5: Solve for x
    x = 220,286,219.06/19,870.86
  6. Step 6: Final answer
    x = 11,085.89

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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.