Home / 19,291.08-28,938.75-6,140.40

Finding the Fourth Proportional to 19,291.08, 28,938.75 and 6,140.40

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Solution

The fourth proportional to 19,291.08, 28,938.75 and 6,140.40 is: 9,211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,291.08 : 28,938.75 = 6,140.40 : x
  2. Step 2: Convert to fraction form
    19,291.08/28,938.75 = 6,140.40/x
  3. Step 3: Cross multiply
    19,291.08x = 28,938.75 × 6,140.40
  4. Step 4: Simplify right side
    19,291.08x = 177,695,500.50
  5. Step 5: Solve for x
    x = 177,695,500.50/19,291.08
  6. Step 6: Final answer
    x = 9,211.28

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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.