Home / 28,430.89-42,631.24-8,704.15

Finding the Fourth Proportional to 28,430.89, 42,631.24 and 8,704.15

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Solution

The fourth proportional to 28,430.89, 42,631.24 and 8,704.15 is: 13,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.89 : 42,631.24 = 8,704.15 : x
  2. Step 2: Convert to fraction form
    28,430.89/42,631.24 = 8,704.15/x
  3. Step 3: Cross multiply
    28,430.89x = 42,631.24 × 8,704.15
  4. Step 4: Simplify right side
    28,430.89x = 371,068,707.65
  5. Step 5: Solve for x
    x = 371,068,707.65/28,430.89
  6. Step 6: Final answer
    x = 13,051.60

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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.