Home / 15,782.46-21,777.12-9,068.40

Finding the Fourth Proportional to 15,782.46, 21,777.12 and 9,068.40

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Solution

The fourth proportional to 15,782.46, 21,777.12 and 9,068.40 is: 12,512.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,782.46 : 21,777.12 = 9,068.40 : x
  2. Step 2: Convert to fraction form
    15,782.46/21,777.12 = 9,068.40/x
  3. Step 3: Cross multiply
    15,782.46x = 21,777.12 × 9,068.40
  4. Step 4: Simplify right side
    15,782.46x = 197,483,635.01
  5. Step 5: Solve for x
    x = 197,483,635.01/15,782.46
  6. Step 6: Final answer
    x = 12,512.86

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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.