Home / 19,215.28-28,831.80-7,365.15

Finding the Fourth Proportional to 19,215.28, 28,831.80 and 7,365.15

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Solution

The fourth proportional to 19,215.28, 28,831.80 and 7,365.15 is: 11,051.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.28 : 28,831.80 = 7,365.15 : x
  2. Step 2: Convert to fraction form
    19,215.28/28,831.80 = 7,365.15/x
  3. Step 3: Cross multiply
    19,215.28x = 28,831.80 × 7,365.15
  4. Step 4: Simplify right side
    19,215.28x = 212,350,531.77
  5. Step 5: Solve for x
    x = 212,350,531.77/19,215.28
  6. Step 6: Final answer
    x = 11,051.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.