Home / 9,901.50-13,664.08-5,709.76

Finding the Fourth Proportional to 9,901.50, 13,664.08 and 5,709.76

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Solution

The fourth proportional to 9,901.50, 13,664.08 and 5,709.76 is: 7,879.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,901.50 : 13,664.08 = 5,709.76 : x
  2. Step 2: Convert to fraction form
    9,901.50/13,664.08 = 5,709.76/x
  3. Step 3: Cross multiply
    9,901.50x = 13,664.08 × 5,709.76
  4. Step 4: Simplify right side
    9,901.50x = 78,018,617.42
  5. Step 5: Solve for x
    x = 78,018,617.42/9,901.50
  6. Step 6: Final answer
    x = 7,879.47

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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.