Home / 13,243.30-19,870.37-7,001.65

Finding the Fourth Proportional to 13,243.30, 19,870.37 and 7,001.65

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Solution

The fourth proportional to 13,243.30, 19,870.37 and 7,001.65 is: 10,505.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.30 : 19,870.37 = 7,001.65 : x
  2. Step 2: Convert to fraction form
    13,243.30/19,870.37 = 7,001.65/x
  3. Step 3: Cross multiply
    13,243.30x = 19,870.37 × 7,001.65
  4. Step 4: Simplify right side
    13,243.30x = 139,125,376.11
  5. Step 5: Solve for x
    x = 139,125,376.11/13,243.30
  6. Step 6: Final answer
    x = 10,505.34

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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.