Home / 28,885.40-39,840.51-18,264.80

Finding the Fourth Proportional to 28,885.40, 39,840.51 and 18,264.80

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Solution

The fourth proportional to 28,885.40, 39,840.51 and 18,264.80 is: 25,191.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.40 : 39,840.51 = 18,264.80 : x
  2. Step 2: Convert to fraction form
    28,885.40/39,840.51 = 18,264.80/x
  3. Step 3: Cross multiply
    28,885.40x = 39,840.51 × 18,264.80
  4. Step 4: Simplify right side
    28,885.40x = 727,678,947.05
  5. Step 5: Solve for x
    x = 727,678,947.05/28,885.40
  6. Step 6: Final answer
    x = 25,191.93

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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.