Home / 14,009.20-19,332.60-7,721.56

Finding the Fourth Proportional to 14,009.20, 19,332.60 and 7,721.56

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Solution

The fourth proportional to 14,009.20, 19,332.60 and 7,721.56 is: 10,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.20 : 19,332.60 = 7,721.56 : x
  2. Step 2: Convert to fraction form
    14,009.20/19,332.60 = 7,721.56/x
  3. Step 3: Cross multiply
    14,009.20x = 19,332.60 × 7,721.56
  4. Step 4: Simplify right side
    14,009.20x = 149,277,830.86
  5. Step 5: Solve for x
    x = 149,277,830.86/14,009.20
  6. Step 6: Final answer
    x = 10,655.70

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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.