Home / 21,835.16-30,108.68-14,749.28

Finding the Fourth Proportional to 21,835.16, 30,108.68 and 14,749.28

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Solution

The fourth proportional to 21,835.16, 30,108.68 and 14,749.28 is: 20,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.16 : 30,108.68 = 14,749.28 : x
  2. Step 2: Convert to fraction form
    21,835.16/30,108.68 = 14,749.28/x
  3. Step 3: Cross multiply
    21,835.16x = 30,108.68 × 14,749.28
  4. Step 4: Simplify right side
    21,835.16x = 444,081,278.00
  5. Step 5: Solve for x
    x = 444,081,278.00/21,835.16
  6. Step 6: Final answer
    x = 20,337.90

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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.