Home / 25,783.84-38,711.67-13,312.85

Finding the Fourth Proportional to 25,783.84, 38,711.67 and 13,312.85

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Solution

The fourth proportional to 25,783.84, 38,711.67 and 13,312.85 is: 19,987.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,783.84 : 38,711.67 = 13,312.85 : x
  2. Step 2: Convert to fraction form
    25,783.84/38,711.67 = 13,312.85/x
  3. Step 3: Cross multiply
    25,783.84x = 38,711.67 × 13,312.85
  4. Step 4: Simplify right side
    25,783.84x = 515,362,655.96
  5. Step 5: Solve for x
    x = 515,362,655.96/25,783.84
  6. Step 6: Final answer
    x = 19,987.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.