Home / 13,731.56-18,931.23-10,908.31

Finding the Fourth Proportional to 13,731.56, 18,931.23 and 10,908.31

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Solution

The fourth proportional to 13,731.56, 18,931.23 and 10,908.31 is: 15,038.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.56 : 18,931.23 = 10,908.31 : x
  2. Step 2: Convert to fraction form
    13,731.56/18,931.23 = 10,908.31/x
  3. Step 3: Cross multiply
    13,731.56x = 18,931.23 × 10,908.31
  4. Step 4: Simplify right side
    13,731.56x = 206,507,678.19
  5. Step 5: Solve for x
    x = 206,507,678.19/13,731.56
  6. Step 6: Final answer
    x = 15,038.91

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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.