Home / 13,707.52-18,916.32-7,740.48

Finding the Fourth Proportional to 13,707.52, 18,916.32 and 7,740.48

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Solution

The fourth proportional to 13,707.52, 18,916.32 and 7,740.48 is: 10,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.52 : 18,916.32 = 7,740.48 : x
  2. Step 2: Convert to fraction form
    13,707.52/18,916.32 = 7,740.48/x
  3. Step 3: Cross multiply
    13,707.52x = 18,916.32 × 7,740.48
  4. Step 4: Simplify right side
    13,707.52x = 146,421,396.63
  5. Step 5: Solve for x
    x = 146,421,396.63/13,707.52
  6. Step 6: Final answer
    x = 10,681.83

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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.