Home / 21,100.67-31,666.55-10,007.39

Finding the Fourth Proportional to 21,100.67, 31,666.55 and 10,007.39

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Solution

The fourth proportional to 21,100.67, 31,666.55 and 10,007.39 is: 15,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.67 : 31,666.55 = 10,007.39 : x
  2. Step 2: Convert to fraction form
    21,100.67/31,666.55 = 10,007.39/x
  3. Step 3: Cross multiply
    21,100.67x = 31,666.55 × 10,007.39
  4. Step 4: Simplify right side
    21,100.67x = 316,899,307.43
  5. Step 5: Solve for x
    x = 316,899,307.43/21,100.67
  6. Step 6: Final answer
    x = 15,018.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.