Home / 18,343.89-25,314.43-10,386.05

Finding the Fourth Proportional to 18,343.89, 25,314.43 and 10,386.05

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Solution

The fourth proportional to 18,343.89, 25,314.43 and 10,386.05 is: 14,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.89 : 25,314.43 = 10,386.05 : x
  2. Step 2: Convert to fraction form
    18,343.89/25,314.43 = 10,386.05/x
  3. Step 3: Cross multiply
    18,343.89x = 25,314.43 × 10,386.05
  4. Step 4: Simplify right side
    18,343.89x = 262,916,935.70
  5. Step 5: Solve for x
    x = 262,916,935.70/18,343.89
  6. Step 6: Final answer
    x = 14,332.67

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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.