Home / 15,830.91-21,837.13-10,453.39

Finding the Fourth Proportional to 15,830.91, 21,837.13 and 10,453.39

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Solution

The fourth proportional to 15,830.91, 21,837.13 and 10,453.39 is: 14,419.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,830.91 : 21,837.13 = 10,453.39 : x
  2. Step 2: Convert to fraction form
    15,830.91/21,837.13 = 10,453.39/x
  3. Step 3: Cross multiply
    15,830.91x = 21,837.13 × 10,453.39
  4. Step 4: Simplify right side
    15,830.91x = 228,272,036.37
  5. Step 5: Solve for x
    x = 228,272,036.37/15,830.91
  6. Step 6: Final answer
    x = 14,419.39

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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.