Home / 27,807.93-38,381.81-15,878.19

Finding the Fourth Proportional to 27,807.93, 38,381.81 and 15,878.19

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Solution

The fourth proportional to 27,807.93, 38,381.81 and 15,878.19 is: 21,915.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,807.93 : 38,381.81 = 15,878.19 : x
  2. Step 2: Convert to fraction form
    27,807.93/38,381.81 = 15,878.19/x
  3. Step 3: Cross multiply
    27,807.93x = 38,381.81 × 15,878.19
  4. Step 4: Simplify right side
    27,807.93x = 609,433,671.72
  5. Step 5: Solve for x
    x = 609,433,671.72/27,807.93
  6. Step 6: Final answer
    x = 21,915.82

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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.