Home / 12,988.28-19,470.71-4,666.34

Finding the Fourth Proportional to 12,988.28, 19,470.71 and 4,666.34

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Solution

The fourth proportional to 12,988.28, 19,470.71 and 4,666.34 is: 6,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.28 : 19,470.71 = 4,666.34 : x
  2. Step 2: Convert to fraction form
    12,988.28/19,470.71 = 4,666.34/x
  3. Step 3: Cross multiply
    12,988.28x = 19,470.71 × 4,666.34
  4. Step 4: Simplify right side
    12,988.28x = 90,856,832.22
  5. Step 5: Solve for x
    x = 90,856,832.22/12,988.28
  6. Step 6: Final answer
    x = 6,995.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.