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Finding the Fourth Proportional to 15,582.03, 21,507.12 and 9,618.63

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Solution

The fourth proportional to 15,582.03, 21,507.12 and 9,618.63 is: 13,276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,582.03 : 21,507.12 = 9,618.63 : x
  2. Step 2: Convert to fraction form
    15,582.03/21,507.12 = 9,618.63/x
  3. Step 3: Cross multiply
    15,582.03x = 21,507.12 × 9,618.63
  4. Step 4: Simplify right side
    15,582.03x = 206,869,029.65
  5. Step 5: Solve for x
    x = 206,869,029.65/15,582.03
  6. Step 6: Final answer
    x = 13,276.13

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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.