Home / 28,467.60-42,643.80-19,712.40

Finding the Fourth Proportional to 28,467.60, 42,643.80 and 19,712.40

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Solution

The fourth proportional to 28,467.60, 42,643.80 and 19,712.40 is: 29,528.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,467.60 : 42,643.80 = 19,712.40 : x
  2. Step 2: Convert to fraction form
    28,467.60/42,643.80 = 19,712.40/x
  3. Step 3: Cross multiply
    28,467.60x = 42,643.80 × 19,712.40
  4. Step 4: Simplify right side
    28,467.60x = 840,611,643.12
  5. Step 5: Solve for x
    x = 840,611,643.12/28,467.60
  6. Step 6: Final answer
    x = 29,528.71

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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.