Home / 28,370.64-39,152.88-15,795.12

Finding the Fourth Proportional to 28,370.64, 39,152.88 and 15,795.12

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Solution

The fourth proportional to 28,370.64, 39,152.88 and 15,795.12 is: 21,798.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.64 : 39,152.88 = 15,795.12 : x
  2. Step 2: Convert to fraction form
    28,370.64/39,152.88 = 15,795.12/x
  3. Step 3: Cross multiply
    28,370.64x = 39,152.88 × 15,795.12
  4. Step 4: Simplify right side
    28,370.64x = 618,424,437.95
  5. Step 5: Solve for x
    x = 618,424,437.95/28,370.64
  6. Step 6: Final answer
    x = 21,798.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.