Home / 14,128.50-19,497.45-7,840.86

Finding the Fourth Proportional to 14,128.50, 19,497.45 and 7,840.86

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Solution

The fourth proportional to 14,128.50, 19,497.45 and 7,840.86 is: 10,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.50 : 19,497.45 = 7,840.86 : x
  2. Step 2: Convert to fraction form
    14,128.50/19,497.45 = 7,840.86/x
  3. Step 3: Cross multiply
    14,128.50x = 19,497.45 × 7,840.86
  4. Step 4: Simplify right side
    14,128.50x = 152,876,775.81
  5. Step 5: Solve for x
    x = 152,876,775.81/14,128.50
  6. Step 6: Final answer
    x = 10,820.45

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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.