Home / 27,820.36-38,389.04-15,881.39

Finding the Fourth Proportional to 27,820.36, 38,389.04 and 15,881.39

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Solution

The fourth proportional to 27,820.36, 38,389.04 and 15,881.39 is: 21,914.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,820.36 : 38,389.04 = 15,881.39 : x
  2. Step 2: Convert to fraction form
    27,820.36/38,389.04 = 15,881.39/x
  3. Step 3: Cross multiply
    27,820.36x = 38,389.04 × 15,881.39
  4. Step 4: Simplify right side
    27,820.36x = 609,671,356.10
  5. Step 5: Solve for x
    x = 609,671,356.10/27,820.36
  6. Step 6: Final answer
    x = 21,914.57

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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.