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Finding the Fourth Proportional to 14,439, 19,925.60 and 8,065.68

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Solution

The fourth proportional to 14,439, 19,925.60 and 8,065.68 is: 11,130.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,439 : 19,925.60 = 8,065.68 : x
  2. Step 2: Convert to fraction form
    14,439/19,925.60 = 8,065.68/x
  3. Step 3: Cross multiply
    14,439x = 19,925.60 × 8,065.68
  4. Step 4: Simplify right side
    14,439x = 160,713,513.41
  5. Step 5: Solve for x
    x = 160,713,513.41/14,439
  6. Step 6: Final answer
    x = 11,130.52

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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.