Home / 21,873.52-30,210.64-15,931.76

Finding the Fourth Proportional to 21,873.52, 30,210.64 and 15,931.76

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Solution

The fourth proportional to 21,873.52, 30,210.64 and 15,931.76 is: 22,004.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,873.52 : 30,210.64 = 15,931.76 : x
  2. Step 2: Convert to fraction form
    21,873.52/30,210.64 = 15,931.76/x
  3. Step 3: Cross multiply
    21,873.52x = 30,210.64 × 15,931.76
  4. Step 4: Simplify right side
    21,873.52x = 481,308,665.93
  5. Step 5: Solve for x
    x = 481,308,665.93/21,873.52
  6. Step 6: Final answer
    x = 22,004.17

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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.