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Finding the Fourth Proportional to 14,307.66, 19,743.75 and 8,340.30

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Solution

The fourth proportional to 14,307.66, 19,743.75 and 8,340.30 is: 11,509.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,307.66 : 19,743.75 = 8,340.30 : x
  2. Step 2: Convert to fraction form
    14,307.66/19,743.75 = 8,340.30/x
  3. Step 3: Cross multiply
    14,307.66x = 19,743.75 × 8,340.30
  4. Step 4: Simplify right side
    14,307.66x = 164,668,798.13
  5. Step 5: Solve for x
    x = 164,668,798.13/14,307.66
  6. Step 6: Final answer
    x = 11,509.14

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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.