Home / 13,700.04-18,905.68-7,731.52

Finding the Fourth Proportional to 13,700.04, 18,905.68 and 7,731.52

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Solution

The fourth proportional to 13,700.04, 18,905.68 and 7,731.52 is: 10,669.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.04 : 18,905.68 = 7,731.52 : x
  2. Step 2: Convert to fraction form
    13,700.04/18,905.68 = 7,731.52/x
  3. Step 3: Cross multiply
    13,700.04x = 18,905.68 × 7,731.52
  4. Step 4: Simplify right side
    13,700.04x = 146,169,643.03
  5. Step 5: Solve for x
    x = 146,169,643.03/13,700.04
  6. Step 6: Final answer
    x = 10,669.29

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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.