Home / 15,782.40-21,764.16-12,244.32

Finding the Fourth Proportional to 15,782.40, 21,764.16 and 12,244.32

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Solution

The fourth proportional to 15,782.40, 21,764.16 and 12,244.32 is: 16,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,782.40 : 21,764.16 = 12,244.32 : x
  2. Step 2: Convert to fraction form
    15,782.40/21,764.16 = 12,244.32/x
  3. Step 3: Cross multiply
    15,782.40x = 21,764.16 × 12,244.32
  4. Step 4: Simplify right side
    15,782.40x = 266,487,339.57
  5. Step 5: Solve for x
    x = 266,487,339.57/15,782.40
  6. Step 6: Final answer
    x = 16,885.10

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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.