Home / 20,627.40-28,478.70-14,178.14

Finding the Fourth Proportional to 20,627.40, 28,478.70 and 14,178.14

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Solution

The fourth proportional to 20,627.40, 28,478.70 and 14,178.14 is: 19,574.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.40 : 28,478.70 = 14,178.14 : x
  2. Step 2: Convert to fraction form
    20,627.40/28,478.70 = 14,178.14/x
  3. Step 3: Cross multiply
    20,627.40x = 28,478.70 × 14,178.14
  4. Step 4: Simplify right side
    20,627.40x = 403,774,995.62
  5. Step 5: Solve for x
    x = 403,774,995.62/20,627.40
  6. Step 6: Final answer
    x = 19,574.69

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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.