Home / 27,117.95-37,421.68-15,787.77

Finding the Fourth Proportional to 27,117.95, 37,421.68 and 15,787.77

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Solution

The fourth proportional to 27,117.95, 37,421.68 and 15,787.77 is: 21,786.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,117.95 : 37,421.68 = 15,787.77 : x
  2. Step 2: Convert to fraction form
    27,117.95/37,421.68 = 15,787.77/x
  3. Step 3: Cross multiply
    27,117.95x = 37,421.68 × 15,787.77
  4. Step 4: Simplify right side
    27,117.95x = 590,804,797.91
  5. Step 5: Solve for x
    x = 590,804,797.91/27,117.95
  6. Step 6: Final answer
    x = 21,786.48

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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.