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Finding the Fourth Proportional to 14,489.79, 19,984.93 and 12,476.65

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Solution

The fourth proportional to 14,489.79, 19,984.93 and 12,476.65 is: 17,208.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,489.79 : 19,984.93 = 12,476.65 : x
  2. Step 2: Convert to fraction form
    14,489.79/19,984.93 = 12,476.65/x
  3. Step 3: Cross multiply
    14,489.79x = 19,984.93 × 12,476.65
  4. Step 4: Simplify right side
    14,489.79x = 249,344,933.20
  5. Step 5: Solve for x
    x = 249,344,933.20/14,489.79
  6. Step 6: Final answer
    x = 17,208.32

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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.