Home / 15,376.10-21,230.69-15,130.95

Finding the Fourth Proportional to 15,376.10, 21,230.69 and 15,130.95

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Solution

The fourth proportional to 15,376.10, 21,230.69 and 15,130.95 is: 20,892.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,376.10 : 21,230.69 = 15,130.95 : x
  2. Step 2: Convert to fraction form
    15,376.10/21,230.69 = 15,130.95/x
  3. Step 3: Cross multiply
    15,376.10x = 21,230.69 × 15,130.95
  4. Step 4: Simplify right side
    15,376.10x = 321,240,433.20
  5. Step 5: Solve for x
    x = 321,240,433.20/15,376.10
  6. Step 6: Final answer
    x = 20,892.20

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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.