Home / 13,537.79-18,684.14-7,875.89

Finding the Fourth Proportional to 13,537.79, 18,684.14 and 7,875.89

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Solution

The fourth proportional to 13,537.79, 18,684.14 and 7,875.89 is: 10,869.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,537.79 : 18,684.14 = 7,875.89 : x
  2. Step 2: Convert to fraction form
    13,537.79/18,684.14 = 7,875.89/x
  3. Step 3: Cross multiply
    13,537.79x = 18,684.14 × 7,875.89
  4. Step 4: Simplify right side
    13,537.79x = 147,154,231.38
  5. Step 5: Solve for x
    x = 147,154,231.38/13,537.79
  6. Step 6: Final answer
    x = 10,869.89

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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.