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Finding the Fourth Proportional to 26,579, 36,678.80 and 15,831.24

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Solution

The fourth proportional to 26,579, 36,678.80 and 15,831.24 is: 21,846.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,579 : 36,678.80 = 15,831.24 : x
  2. Step 2: Convert to fraction form
    26,579/36,678.80 = 15,831.24/x
  3. Step 3: Cross multiply
    26,579x = 36,678.80 × 15,831.24
  4. Step 4: Simplify right side
    26,579x = 580,670,885.71
  5. Step 5: Solve for x
    x = 580,670,885.71/26,579
  6. Step 6: Final answer
    x = 21,846.98

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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.