Home / 30,831.12-42,547.14-16,683.94

Finding the Fourth Proportional to 30,831.12, 42,547.14 and 16,683.94

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Solution

The fourth proportional to 30,831.12, 42,547.14 and 16,683.94 is: 23,023.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,831.12 : 42,547.14 = 16,683.94 : x
  2. Step 2: Convert to fraction form
    30,831.12/42,547.14 = 16,683.94/x
  3. Step 3: Cross multiply
    30,831.12x = 42,547.14 × 16,683.94
  4. Step 4: Simplify right side
    30,831.12x = 709,853,930.93
  5. Step 5: Solve for x
    x = 709,853,930.93/30,831.12
  6. Step 6: Final answer
    x = 23,023.94

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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.