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Finding the Fourth Proportional to 15,800.65, 21,803.03 and 8,726.65

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Solution

The fourth proportional to 15,800.65, 21,803.03 and 8,726.65 is: 12,041.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,800.65 : 21,803.03 = 8,726.65 : x
  2. Step 2: Convert to fraction form
    15,800.65/21,803.03 = 8,726.65/x
  3. Step 3: Cross multiply
    15,800.65x = 21,803.03 × 8,726.65
  4. Step 4: Simplify right side
    15,800.65x = 190,267,259.10
  5. Step 5: Solve for x
    x = 190,267,259.10/15,800.65
  6. Step 6: Final answer
    x = 12,041.74

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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.