Home / 15,828.30-23,713.65-12,890.70

Finding the Fourth Proportional to 15,828.30, 23,713.65 and 12,890.70

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Solution

The fourth proportional to 15,828.30, 23,713.65 and 12,890.70 is: 19,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.30 : 23,713.65 = 12,890.70 : x
  2. Step 2: Convert to fraction form
    15,828.30/23,713.65 = 12,890.70/x
  3. Step 3: Cross multiply
    15,828.30x = 23,713.65 × 12,890.70
  4. Step 4: Simplify right side
    15,828.30x = 305,685,548.06
  5. Step 5: Solve for x
    x = 305,685,548.06/15,828.30
  6. Step 6: Final answer
    x = 19,312.60

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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.