Home / 27,813.94-38,384.87-15,881.02

Finding the Fourth Proportional to 27,813.94, 38,384.87 and 15,881.02

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Solution

The fourth proportional to 27,813.94, 38,384.87 and 15,881.02 is: 21,916.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,813.94 : 38,384.87 = 15,881.02 : x
  2. Step 2: Convert to fraction form
    27,813.94/38,384.87 = 15,881.02/x
  3. Step 3: Cross multiply
    27,813.94x = 38,384.87 × 15,881.02
  4. Step 4: Simplify right side
    27,813.94x = 609,590,712.80
  5. Step 5: Solve for x
    x = 609,590,712.80/27,813.94
  6. Step 6: Final answer
    x = 21,916.74

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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.