Home / 28,615.32-42,914.25-19,787.40

Finding the Fourth Proportional to 28,615.32, 42,914.25 and 19,787.40

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Solution

The fourth proportional to 28,615.32, 42,914.25 and 19,787.40 is: 29,675.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.32 : 42,914.25 = 19,787.40 : x
  2. Step 2: Convert to fraction form
    28,615.32/42,914.25 = 19,787.40/x
  3. Step 3: Cross multiply
    28,615.32x = 42,914.25 × 19,787.40
  4. Step 4: Simplify right side
    28,615.32x = 849,161,430.45
  5. Step 5: Solve for x
    x = 849,161,430.45/28,615.32
  6. Step 6: Final answer
    x = 29,675.06

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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.