Home / 14,774.16-20,391.84-8,490.18

Finding the Fourth Proportional to 14,774.16, 20,391.84 and 8,490.18

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Solution

The fourth proportional to 14,774.16, 20,391.84 and 8,490.18 is: 11,718.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,774.16 : 20,391.84 = 8,490.18 : x
  2. Step 2: Convert to fraction form
    14,774.16/20,391.84 = 8,490.18/x
  3. Step 3: Cross multiply
    14,774.16x = 20,391.84 × 8,490.18
  4. Step 4: Simplify right side
    14,774.16x = 173,130,392.13
  5. Step 5: Solve for x
    x = 173,130,392.13/14,774.16
  6. Step 6: Final answer
    x = 11,718.46

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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.