Home / 15,638.48-21,580.25-8,563.53

Finding the Fourth Proportional to 15,638.48, 21,580.25 and 8,563.53

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Solution

The fourth proportional to 15,638.48, 21,580.25 and 8,563.53 is: 11,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.48 : 21,580.25 = 8,563.53 : x
  2. Step 2: Convert to fraction form
    15,638.48/21,580.25 = 8,563.53/x
  3. Step 3: Cross multiply
    15,638.48x = 21,580.25 × 8,563.53
  4. Step 4: Simplify right side
    15,638.48x = 184,803,075.46
  5. Step 5: Solve for x
    x = 184,803,075.46/15,638.48
  6. Step 6: Final answer
    x = 11,817.21

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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.