Home / 28,392.12-42,477.46-18,987.41

Finding the Fourth Proportional to 28,392.12, 42,477.46 and 18,987.41

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Solution

The fourth proportional to 28,392.12, 42,477.46 and 18,987.41 is: 28,407.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.12 : 42,477.46 = 18,987.41 : x
  2. Step 2: Convert to fraction form
    28,392.12/42,477.46 = 18,987.41/x
  3. Step 3: Cross multiply
    28,392.12x = 42,477.46 × 18,987.41
  4. Step 4: Simplify right side
    28,392.12x = 806,537,114.31
  5. Step 5: Solve for x
    x = 806,537,114.31/28,392.12
  6. Step 6: Final answer
    x = 28,407.08

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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.