Home / 19,783.28-27,275.46-12,707.12

Finding the Fourth Proportional to 19,783.28, 27,275.46 and 12,707.12

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Solution

The fourth proportional to 19,783.28, 27,275.46 and 12,707.12 is: 17,519.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,783.28 : 27,275.46 = 12,707.12 : x
  2. Step 2: Convert to fraction form
    19,783.28/27,275.46 = 12,707.12/x
  3. Step 3: Cross multiply
    19,783.28x = 27,275.46 × 12,707.12
  4. Step 4: Simplify right side
    19,783.28x = 346,592,543.28
  5. Step 5: Solve for x
    x = 346,592,543.28/19,783.28
  6. Step 6: Final answer
    x = 17,519.47

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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.