Home / 27,870.50-38,461.29-15,295.25

Finding the Fourth Proportional to 27,870.50, 38,461.29 and 15,295.25

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Solution

The fourth proportional to 27,870.50, 38,461.29 and 15,295.25 is: 21,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.50 : 38,461.29 = 15,295.25 : x
  2. Step 2: Convert to fraction form
    27,870.50/38,461.29 = 15,295.25/x
  3. Step 3: Cross multiply
    27,870.50x = 38,461.29 × 15,295.25
  4. Step 4: Simplify right side
    27,870.50x = 588,275,045.87
  5. Step 5: Solve for x
    x = 588,275,045.87/27,870.50
  6. Step 6: Final answer
    x = 21,107.45

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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.