Home / 15,673.10-21,628.50-8,774.18

Finding the Fourth Proportional to 15,673.10, 21,628.50 and 8,774.18

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Solution

The fourth proportional to 15,673.10, 21,628.50 and 8,774.18 is: 12,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.10 : 21,628.50 = 8,774.18 : x
  2. Step 2: Convert to fraction form
    15,673.10/21,628.50 = 8,774.18/x
  3. Step 3: Cross multiply
    15,673.10x = 21,628.50 × 8,774.18
  4. Step 4: Simplify right side
    15,673.10x = 189,772,352.13
  5. Step 5: Solve for x
    x = 189,772,352.13/15,673.10
  6. Step 6: Final answer
    x = 12,108.16

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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.