Home / 13,646.32-18,831.75-7,678.03

Finding the Fourth Proportional to 13,646.32, 18,831.75 and 7,678.03

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Solution

The fourth proportional to 13,646.32, 18,831.75 and 7,678.03 is: 10,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.32 : 18,831.75 = 7,678.03 : x
  2. Step 2: Convert to fraction form
    13,646.32/18,831.75 = 7,678.03/x
  3. Step 3: Cross multiply
    13,646.32x = 18,831.75 × 7,678.03
  4. Step 4: Simplify right side
    13,646.32x = 144,590,741.45
  5. Step 5: Solve for x
    x = 144,590,741.45/13,646.32
  6. Step 6: Final answer
    x = 10,595.58

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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.