Home / 15,187.48-20,948.70-8,895.40

Finding the Fourth Proportional to 15,187.48, 20,948.70 and 8,895.40

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Solution

The fourth proportional to 15,187.48, 20,948.70 and 8,895.40 is: 12,269.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.48 : 20,948.70 = 8,895.40 : x
  2. Step 2: Convert to fraction form
    15,187.48/20,948.70 = 8,895.40/x
  3. Step 3: Cross multiply
    15,187.48x = 20,948.70 × 8,895.40
  4. Step 4: Simplify right side
    15,187.48x = 186,347,065.98
  5. Step 5: Solve for x
    x = 186,347,065.98/15,187.48
  6. Step 6: Final answer
    x = 12,269.78

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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.