Home / 13,275.90-19,899.87-6,688.24

Finding the Fourth Proportional to 13,275.90, 19,899.87 and 6,688.24

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Solution

The fourth proportional to 13,275.90, 19,899.87 and 6,688.24 is: 10,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.90 : 19,899.87 = 6,688.24 : x
  2. Step 2: Convert to fraction form
    13,275.90/19,899.87 = 6,688.24/x
  3. Step 3: Cross multiply
    13,275.90x = 19,899.87 × 6,688.24
  4. Step 4: Simplify right side
    13,275.90x = 133,095,106.53
  5. Step 5: Solve for x
    x = 133,095,106.53/13,275.90
  6. Step 6: Final answer
    x = 10,025.32

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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.