Home / 21,615.08-29,831.23-12,670.15

Finding the Fourth Proportional to 21,615.08, 29,831.23 and 12,670.15

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Solution

The fourth proportional to 21,615.08, 29,831.23 and 12,670.15 is: 17,486.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.08 : 29,831.23 = 12,670.15 : x
  2. Step 2: Convert to fraction form
    21,615.08/29,831.23 = 12,670.15/x
  3. Step 3: Cross multiply
    21,615.08x = 29,831.23 × 12,670.15
  4. Step 4: Simplify right side
    21,615.08x = 377,966,158.78
  5. Step 5: Solve for x
    x = 377,966,158.78/21,615.08
  6. Step 6: Final answer
    x = 17,486.23

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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.