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Finding the Fourth Proportional to 14,615.16, 21,895.21 and 7,210.95

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Solution

The fourth proportional to 14,615.16, 21,895.21 and 7,210.95 is: 10,802.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.16 : 21,895.21 = 7,210.95 : x
  2. Step 2: Convert to fraction form
    14,615.16/21,895.21 = 7,210.95/x
  3. Step 3: Cross multiply
    14,615.16x = 21,895.21 × 7,210.95
  4. Step 4: Simplify right side
    14,615.16x = 157,885,264.55
  5. Step 5: Solve for x
    x = 157,885,264.55/14,615.16
  6. Step 6: Final answer
    x = 10,802.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.