Home / 10,721.79-16,009.36-9,603.99

Finding the Fourth Proportional to 10,721.79, 16,009.36 and 9,603.99

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Solution

The fourth proportional to 10,721.79, 16,009.36 and 9,603.99 is: 14,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.79 : 16,009.36 = 9,603.99 : x
  2. Step 2: Convert to fraction form
    10,721.79/16,009.36 = 9,603.99/x
  3. Step 3: Cross multiply
    10,721.79x = 16,009.36 × 9,603.99
  4. Step 4: Simplify right side
    10,721.79x = 153,753,709.34
  5. Step 5: Solve for x
    x = 153,753,709.34/10,721.79
  6. Step 6: Final answer
    x = 14,340.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.