Home / 15,454.67-21,328.51-8,740.34

Finding the Fourth Proportional to 15,454.67, 21,328.51 and 8,740.34

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Solution

The fourth proportional to 15,454.67, 21,328.51 and 8,740.34 is: 12,062.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,454.67 : 21,328.51 = 8,740.34 : x
  2. Step 2: Convert to fraction form
    15,454.67/21,328.51 = 8,740.34/x
  3. Step 3: Cross multiply
    15,454.67x = 21,328.51 × 8,740.34
  4. Step 4: Simplify right side
    15,454.67x = 186,418,322.45
  5. Step 5: Solve for x
    x = 186,418,322.45/15,454.67
  6. Step 6: Final answer
    x = 12,062.26

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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.