Home / 15,478.51-21,360.39-8,404.93

Finding the Fourth Proportional to 15,478.51, 21,360.39 and 8,404.93

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Solution

The fourth proportional to 15,478.51, 21,360.39 and 8,404.93 is: 11,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.51 : 21,360.39 = 8,404.93 : x
  2. Step 2: Convert to fraction form
    15,478.51/21,360.39 = 8,404.93/x
  3. Step 3: Cross multiply
    15,478.51x = 21,360.39 × 8,404.93
  4. Step 4: Simplify right side
    15,478.51x = 179,532,582.72
  5. Step 5: Solve for x
    x = 179,532,582.72/15,478.51
  6. Step 6: Final answer
    x = 11,598.83

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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.