Home / 13,707.04-18,914.64-7,740.16

Finding the Fourth Proportional to 13,707.04, 18,914.64 and 7,740.16

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Solution

The fourth proportional to 13,707.04, 18,914.64 and 7,740.16 is: 10,680.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.04 : 18,914.64 = 7,740.16 : x
  2. Step 2: Convert to fraction form
    13,707.04/18,914.64 = 7,740.16/x
  3. Step 3: Cross multiply
    13,707.04x = 18,914.64 × 7,740.16
  4. Step 4: Simplify right side
    13,707.04x = 146,402,339.94
  5. Step 5: Solve for x
    x = 146,402,339.94/13,707.04
  6. Step 6: Final answer
    x = 10,680.81

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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.