Home / 19,831.68-27,345.60-12,748.32

Finding the Fourth Proportional to 19,831.68, 27,345.60 and 12,748.32

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Solution

The fourth proportional to 19,831.68, 27,345.60 and 12,748.32 is: 17,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.68 : 27,345.60 = 12,748.32 : x
  2. Step 2: Convert to fraction form
    19,831.68/27,345.60 = 12,748.32/x
  3. Step 3: Cross multiply
    19,831.68x = 27,345.60 × 12,748.32
  4. Step 4: Simplify right side
    19,831.68x = 348,610,459.39
  5. Step 5: Solve for x
    x = 348,610,459.39/19,831.68
  6. Step 6: Final answer
    x = 17,578.46

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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.