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Finding the Fourth Proportional to 18,886.88, 28,293.37 and 14,482.81

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Solution

The fourth proportional to 18,886.88, 28,293.37 and 14,482.81 is: 21,695.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.88 : 28,293.37 = 14,482.81 : x
  2. Step 2: Convert to fraction form
    18,886.88/28,293.37 = 14,482.81/x
  3. Step 3: Cross multiply
    18,886.88x = 28,293.37 × 14,482.81
  4. Step 4: Simplify right side
    18,886.88x = 409,767,501.13
  5. Step 5: Solve for x
    x = 409,767,501.13/18,886.88
  6. Step 6: Final answer
    x = 21,695.88

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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.