Home / 13,731.04-18,948.09-7,762.36

Finding the Fourth Proportional to 13,731.04, 18,948.09 and 7,762.36

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Solution

The fourth proportional to 13,731.04, 18,948.09 and 7,762.36 is: 10,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.04 : 18,948.09 = 7,762.36 : x
  2. Step 2: Convert to fraction form
    13,731.04/18,948.09 = 7,762.36/x
  3. Step 3: Cross multiply
    13,731.04x = 18,948.09 × 7,762.36
  4. Step 4: Simplify right side
    13,731.04x = 147,081,895.89
  5. Step 5: Solve for x
    x = 147,081,895.89/13,731.04
  6. Step 6: Final answer
    x = 10,711.64

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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.