Home / 22,831.72-31,500.72-12,758.80

Finding the Fourth Proportional to 22,831.72, 31,500.72 and 12,758.80

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Solution

The fourth proportional to 22,831.72, 31,500.72 and 12,758.80 is: 17,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,831.72 : 31,500.72 = 12,758.80 : x
  2. Step 2: Convert to fraction form
    22,831.72/31,500.72 = 12,758.80/x
  3. Step 3: Cross multiply
    22,831.72x = 31,500.72 × 12,758.80
  4. Step 4: Simplify right side
    22,831.72x = 401,911,386.34
  5. Step 5: Solve for x
    x = 401,911,386.34/22,831.72
  6. Step 6: Final answer
    x = 17,603.20

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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.