Home / 28,323.60-42,445.80-21,295.32

Finding the Fourth Proportional to 28,323.60, 42,445.80 and 21,295.32

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Solution

The fourth proportional to 28,323.60, 42,445.80 and 21,295.32 is: 31,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,323.60 : 42,445.80 = 21,295.32 : x
  2. Step 2: Convert to fraction form
    28,323.60/42,445.80 = 21,295.32/x
  3. Step 3: Cross multiply
    28,323.60x = 42,445.80 × 21,295.32
  4. Step 4: Simplify right side
    28,323.60x = 903,896,893.66
  5. Step 5: Solve for x
    x = 903,896,893.66/28,323.60
  6. Step 6: Final answer
    x = 31,913.21

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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.