Home / 13,312.10-19,948.43-5,405.00

Finding the Fourth Proportional to 13,312.10, 19,948.43 and 5,405.00

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Solution

The fourth proportional to 13,312.10, 19,948.43 and 5,405.00 is: 8,099.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.10 : 19,948.43 = 5,405.00 : x
  2. Step 2: Convert to fraction form
    13,312.10/19,948.43 = 5,405.00/x
  3. Step 3: Cross multiply
    13,312.10x = 19,948.43 × 5,405.00
  4. Step 4: Simplify right side
    13,312.10x = 107,821,327.53
  5. Step 5: Solve for x
    x = 107,821,327.53/13,312.10
  6. Step 6: Final answer
    x = 8,099.50

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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.