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Finding the Fourth Proportional to 26,260, 39,401.52 and 15,316

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Solution

The fourth proportional to 26,260, 39,401.52 and 15,316 is: 22,980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,260 : 39,401.52 = 15,316 : x
  2. Step 2: Convert to fraction form
    26,260/39,401.52 = 15,316/x
  3. Step 3: Cross multiply
    26,260x = 39,401.52 × 15,316
  4. Step 4: Simplify right side
    26,260x = 603,473,680.32
  5. Step 5: Solve for x
    x = 603,473,680.32/26,260
  6. Step 6: Final answer
    x = 22,980.72

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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.