Home / 15,459.84-21,334.26-8,386.11

Finding the Fourth Proportional to 15,459.84, 21,334.26 and 8,386.11

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Solution

The fourth proportional to 15,459.84, 21,334.26 and 8,386.11 is: 11,572.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.84 : 21,334.26 = 8,386.11 : x
  2. Step 2: Convert to fraction form
    15,459.84/21,334.26 = 8,386.11/x
  3. Step 3: Cross multiply
    15,459.84x = 21,334.26 × 8,386.11
  4. Step 4: Simplify right side
    15,459.84x = 178,911,451.13
  5. Step 5: Solve for x
    x = 178,911,451.13/15,459.84
  6. Step 6: Final answer
    x = 11,572.66

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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.