Home / 29,328.59-40,419.15-20,831.07

Finding the Fourth Proportional to 29,328.59, 40,419.15 and 20,831.07

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Solution

The fourth proportional to 29,328.59, 40,419.15 and 20,831.07 is: 28,708.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,328.59 : 40,419.15 = 20,831.07 : x
  2. Step 2: Convert to fraction form
    29,328.59/40,419.15 = 20,831.07/x
  3. Step 3: Cross multiply
    29,328.59x = 40,419.15 × 20,831.07
  4. Step 4: Simplify right side
    29,328.59x = 841,974,142.99
  5. Step 5: Solve for x
    x = 841,974,142.99/29,328.59
  6. Step 6: Final answer
    x = 28,708.31

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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.