Home / 25,315.50-34,935.25-13,985.78

Finding the Fourth Proportional to 25,315.50, 34,935.25 and 13,985.78

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Solution

The fourth proportional to 25,315.50, 34,935.25 and 13,985.78 is: 19,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,315.50 : 34,935.25 = 13,985.78 : x
  2. Step 2: Convert to fraction form
    25,315.50/34,935.25 = 13,985.78/x
  3. Step 3: Cross multiply
    25,315.50x = 34,935.25 × 13,985.78
  4. Step 4: Simplify right side
    25,315.50x = 488,596,476.14
  5. Step 5: Solve for x
    x = 488,596,476.14/25,315.50
  6. Step 6: Final answer
    x = 19,300.29

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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.