Home / 15,487.03-21,378.64-10,458.06

Finding the Fourth Proportional to 15,487.03, 21,378.64 and 10,458.06

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Solution

The fourth proportional to 15,487.03, 21,378.64 and 10,458.06 is: 14,436.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.03 : 21,378.64 = 10,458.06 : x
  2. Step 2: Convert to fraction form
    15,487.03/21,378.64 = 10,458.06/x
  3. Step 3: Cross multiply
    15,487.03x = 21,378.64 × 10,458.06
  4. Step 4: Simplify right side
    15,487.03x = 223,579,099.84
  5. Step 5: Solve for x
    x = 223,579,099.84/15,487.03
  6. Step 6: Final answer
    x = 14,436.54

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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.