Home / 28,008.60-38,648.37-18,953.76

Finding the Fourth Proportional to 28,008.60, 38,648.37 and 18,953.76

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Solution

The fourth proportional to 28,008.60, 38,648.37 and 18,953.76 is: 26,153.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.60 : 38,648.37 = 18,953.76 : x
  2. Step 2: Convert to fraction form
    28,008.60/38,648.37 = 18,953.76/x
  3. Step 3: Cross multiply
    28,008.60x = 38,648.37 × 18,953.76
  4. Step 4: Simplify right side
    28,008.60x = 732,531,929.37
  5. Step 5: Solve for x
    x = 732,531,929.37/28,008.60
  6. Step 6: Final answer
    x = 26,153.82

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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.