Home / 28,239.37-38,970.61-15,492.57

Finding the Fourth Proportional to 28,239.37, 38,970.61 and 15,492.57

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Solution

The fourth proportional to 28,239.37, 38,970.61 and 15,492.57 is: 21,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.37 : 38,970.61 = 15,492.57 : x
  2. Step 2: Convert to fraction form
    28,239.37/38,970.61 = 15,492.57/x
  3. Step 3: Cross multiply
    28,239.37x = 38,970.61 × 15,492.57
  4. Step 4: Simplify right side
    28,239.37x = 603,754,708.51
  5. Step 5: Solve for x
    x = 603,754,708.51/28,239.37
  6. Step 6: Final answer
    x = 21,379.90

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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.