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Finding the Fourth Proportional to 28,036.13, 42,055.00 and 7,259.63

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Solution

The fourth proportional to 28,036.13, 42,055.00 and 7,259.63 is: 10,889.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.13 : 42,055.00 = 7,259.63 : x
  2. Step 2: Convert to fraction form
    28,036.13/42,055.00 = 7,259.63/x
  3. Step 3: Cross multiply
    28,036.13x = 42,055.00 × 7,259.63
  4. Step 4: Simplify right side
    28,036.13x = 305,303,511.23
  5. Step 5: Solve for x
    x = 305,303,511.23/28,036.13
  6. Step 6: Final answer
    x = 10,889.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.