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Finding the Fourth Proportional to 14,155, 19,533.90 and 7,868.62

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Solution

The fourth proportional to 14,155, 19,533.90 and 7,868.62 is: 10,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,155 : 19,533.90 = 7,868.62 : x
  2. Step 2: Convert to fraction form
    14,155/19,533.90 = 7,868.62/x
  3. Step 3: Cross multiply
    14,155x = 19,533.90 × 7,868.62
  4. Step 4: Simplify right side
    14,155x = 153,704,836.22
  5. Step 5: Solve for x
    x = 153,704,836.22/14,155
  6. Step 6: Final answer
    x = 10,858.70

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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.