Home / 20,929.59-31,538.26-17,312.84

Finding the Fourth Proportional to 20,929.59, 31,538.26 and 17,312.84

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Solution

The fourth proportional to 20,929.59, 31,538.26 and 17,312.84 is: 26,088.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.59 : 31,538.26 = 17,312.84 : x
  2. Step 2: Convert to fraction form
    20,929.59/31,538.26 = 17,312.84/x
  3. Step 3: Cross multiply
    20,929.59x = 31,538.26 × 17,312.84
  4. Step 4: Simplify right side
    20,929.59x = 546,016,831.48
  5. Step 5: Solve for x
    x = 546,016,831.48/20,929.59
  6. Step 6: Final answer
    x = 26,088.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.