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Finding the Fourth Proportional to 28,643.73, 42,908.05 and 14,603.19

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Solution

The fourth proportional to 28,643.73, 42,908.05 and 14,603.19 is: 21,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,643.73 : 42,908.05 = 14,603.19 : x
  2. Step 2: Convert to fraction form
    28,643.73/42,908.05 = 14,603.19/x
  3. Step 3: Cross multiply
    28,643.73x = 42,908.05 × 14,603.19
  4. Step 4: Simplify right side
    28,643.73x = 626,594,406.68
  5. Step 5: Solve for x
    x = 626,594,406.68/28,643.73
  6. Step 6: Final answer
    x = 21,875.45

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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.