Home / 28,225.76-38,939-18,152.32

Finding the Fourth Proportional to 28,225.76, 38,939 and 18,152.32

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Solution

The fourth proportional to 28,225.76, 38,939 and 18,152.32 is: 25,042.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.76 : 38,939 = 18,152.32 : x
  2. Step 2: Convert to fraction form
    28,225.76/38,939 = 18,152.32/x
  3. Step 3: Cross multiply
    28,225.76x = 38,939 × 18,152.32
  4. Step 4: Simplify right side
    28,225.76x = 706,833,188.48
  5. Step 5: Solve for x
    x = 706,833,188.48/28,225.76
  6. Step 6: Final answer
    x = 25,042.13

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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.