Home / 28,570.42-39,425.54-15,823.55

Finding the Fourth Proportional to 28,570.42, 39,425.54 and 15,823.55

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Solution

The fourth proportional to 28,570.42, 39,425.54 and 15,823.55 is: 21,835.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.42 : 39,425.54 = 15,823.55 : x
  2. Step 2: Convert to fraction form
    28,570.42/39,425.54 = 15,823.55/x
  3. Step 3: Cross multiply
    28,570.42x = 39,425.54 × 15,823.55
  4. Step 4: Simplify right side
    28,570.42x = 623,852,022.91
  5. Step 5: Solve for x
    x = 623,852,022.91/28,570.42
  6. Step 6: Final answer
    x = 21,835.59

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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.