Home / 15,501.90-21,393.06-8,787.25

Finding the Fourth Proportional to 15,501.90, 21,393.06 and 8,787.25

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Solution

The fourth proportional to 15,501.90, 21,393.06 and 8,787.25 is: 12,126.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,501.90 : 21,393.06 = 8,787.25 : x
  2. Step 2: Convert to fraction form
    15,501.90/21,393.06 = 8,787.25/x
  3. Step 3: Cross multiply
    15,501.90x = 21,393.06 × 8,787.25
  4. Step 4: Simplify right side
    15,501.90x = 187,986,166.49
  5. Step 5: Solve for x
    x = 187,986,166.49/15,501.90
  6. Step 6: Final answer
    x = 12,126.65

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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.