Home / 23,125.79-31,913.81-12,515.65

Finding the Fourth Proportional to 23,125.79, 31,913.81 and 12,515.65

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Solution

The fourth proportional to 23,125.79, 31,913.81 and 12,515.65 is: 17,271.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,125.79 : 31,913.81 = 12,515.65 : x
  2. Step 2: Convert to fraction form
    23,125.79/31,913.81 = 12,515.65/x
  3. Step 3: Cross multiply
    23,125.79x = 31,913.81 × 12,515.65
  4. Step 4: Simplify right side
    23,125.79x = 399,422,076.13
  5. Step 5: Solve for x
    x = 399,422,076.13/23,125.79
  6. Step 6: Final answer
    x = 17,271.72

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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.