Home / 28,713.60-42,990.48-14,643.36

Finding the Fourth Proportional to 28,713.60, 42,990.48 and 14,643.36

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Solution

The fourth proportional to 28,713.60, 42,990.48 and 14,643.36 is: 21,924.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.60 : 42,990.48 = 14,643.36 : x
  2. Step 2: Convert to fraction form
    28,713.60/42,990.48 = 14,643.36/x
  3. Step 3: Cross multiply
    28,713.60x = 42,990.48 × 14,643.36
  4. Step 4: Simplify right side
    28,713.60x = 629,525,075.21
  5. Step 5: Solve for x
    x = 629,525,075.21/28,713.60
  6. Step 6: Final answer
    x = 21,924.28

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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.