Home / 13,999.53-21,000.44-4,639.17

Finding the Fourth Proportional to 13,999.53, 21,000.44 and 4,639.17

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Solution

The fourth proportional to 13,999.53, 21,000.44 and 4,639.17 is: 6,959.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.53 : 21,000.44 = 4,639.17 : x
  2. Step 2: Convert to fraction form
    13,999.53/21,000.44 = 4,639.17/x
  3. Step 3: Cross multiply
    13,999.53x = 21,000.44 × 4,639.17
  4. Step 4: Simplify right side
    13,999.53x = 97,424,588.04
  5. Step 5: Solve for x
    x = 97,424,588.04/13,999.53
  6. Step 6: Final answer
    x = 6,959.13

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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.