Home / 15,700.23-23,658.35-12,987.95

Finding the Fourth Proportional to 15,700.23, 23,658.35 and 12,987.95

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Solution

The fourth proportional to 15,700.23, 23,658.35 and 12,987.95 is: 19,571.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,700.23 : 23,658.35 = 12,987.95 : x
  2. Step 2: Convert to fraction form
    15,700.23/23,658.35 = 12,987.95/x
  3. Step 3: Cross multiply
    15,700.23x = 23,658.35 × 12,987.95
  4. Step 4: Simplify right side
    15,700.23x = 307,273,283.65
  5. Step 5: Solve for x
    x = 307,273,283.65/15,700.23
  6. Step 6: Final answer
    x = 19,571.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.