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Finding the Fourth Proportional to 19,293.67, 28,948.20 and 9,430.30

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Solution

The fourth proportional to 19,293.67, 28,948.20 and 9,430.30 is: 14,149.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,293.67 : 28,948.20 = 9,430.30 : x
  2. Step 2: Convert to fraction form
    19,293.67/28,948.20 = 9,430.30/x
  3. Step 3: Cross multiply
    19,293.67x = 28,948.20 × 9,430.30
  4. Step 4: Simplify right side
    19,293.67x = 272,990,210.46
  5. Step 5: Solve for x
    x = 272,990,210.46/19,293.67
  6. Step 6: Final answer
    x = 14,149.21

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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.