Home / 15,443.65-21,312.23-8,370.07

Finding the Fourth Proportional to 15,443.65, 21,312.23 and 8,370.07

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Solution

The fourth proportional to 15,443.65, 21,312.23 and 8,370.07 is: 11,550.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,443.65 : 21,312.23 = 8,370.07 : x
  2. Step 2: Convert to fraction form
    15,443.65/21,312.23 = 8,370.07/x
  3. Step 3: Cross multiply
    15,443.65x = 21,312.23 × 8,370.07
  4. Step 4: Simplify right side
    15,443.65x = 178,384,815.11
  5. Step 5: Solve for x
    x = 178,384,815.11/15,443.65
  6. Step 6: Final answer
    x = 11,550.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.