Home / 26,621.81-39,939.47-9,981.89

Finding the Fourth Proportional to 26,621.81, 39,939.47 and 9,981.89

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Solution

The fourth proportional to 26,621.81, 39,939.47 and 9,981.89 is: 14,975.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,621.81 : 39,939.47 = 9,981.89 : x
  2. Step 2: Convert to fraction form
    26,621.81/39,939.47 = 9,981.89/x
  3. Step 3: Cross multiply
    26,621.81x = 39,939.47 × 9,981.89
  4. Step 4: Simplify right side
    26,621.81x = 398,671,396.20
  5. Step 5: Solve for x
    x = 398,671,396.20/26,621.81
  6. Step 6: Final answer
    x = 14,975.37

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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.