Home / 13,999.65-19,312.70-8,959.83

Finding the Fourth Proportional to 13,999.65, 19,312.70 and 8,959.83

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Solution

The fourth proportional to 13,999.65, 19,312.70 and 8,959.83 is: 12,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.65 : 19,312.70 = 8,959.83 : x
  2. Step 2: Convert to fraction form
    13,999.65/19,312.70 = 8,959.83/x
  3. Step 3: Cross multiply
    13,999.65x = 19,312.70 × 8,959.83
  4. Step 4: Simplify right side
    13,999.65x = 173,038,508.84
  5. Step 5: Solve for x
    x = 173,038,508.84/13,999.65
  6. Step 6: Final answer
    x = 12,360.20

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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.