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Finding the Fourth Proportional to 18,271.71, 25,212.47 and 10,312.65

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Solution

The fourth proportional to 18,271.71, 25,212.47 and 10,312.65 is: 14,230.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.71 : 25,212.47 = 10,312.65 : x
  2. Step 2: Convert to fraction form
    18,271.71/25,212.47 = 10,312.65/x
  3. Step 3: Cross multiply
    18,271.71x = 25,212.47 × 10,312.65
  4. Step 4: Simplify right side
    18,271.71x = 260,007,327.18
  5. Step 5: Solve for x
    x = 260,007,327.18/18,271.71
  6. Step 6: Final answer
    x = 14,230.05

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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.