Home / 21,492.13-29,657.81-11,931.46

Finding the Fourth Proportional to 21,492.13, 29,657.81 and 11,931.46

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Solution

The fourth proportional to 21,492.13, 29,657.81 and 11,931.46 is: 16,464.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,492.13 : 29,657.81 = 11,931.46 : x
  2. Step 2: Convert to fraction form
    21,492.13/29,657.81 = 11,931.46/x
  3. Step 3: Cross multiply
    21,492.13x = 29,657.81 × 11,931.46
  4. Step 4: Simplify right side
    21,492.13x = 353,860,839.90
  5. Step 5: Solve for x
    x = 353,860,839.90/21,492.13
  6. Step 6: Final answer
    x = 16,464.67

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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.