Home / 21,783.12-30,018.54-14,697.24

Finding the Fourth Proportional to 21,783.12, 30,018.54 and 14,697.24

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Solution

The fourth proportional to 21,783.12, 30,018.54 and 14,697.24 is: 20,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,783.12 : 30,018.54 = 14,697.24 : x
  2. Step 2: Convert to fraction form
    21,783.12/30,018.54 = 14,697.24/x
  3. Step 3: Cross multiply
    21,783.12x = 30,018.54 × 14,697.24
  4. Step 4: Simplify right side
    21,783.12x = 441,189,686.83
  5. Step 5: Solve for x
    x = 441,189,686.83/21,783.12
  6. Step 6: Final answer
    x = 20,253.74

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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.