Home / 12,619.80-18,948.90-9,701.40

Finding the Fourth Proportional to 12,619.80, 18,948.90 and 9,701.40

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Solution

The fourth proportional to 12,619.80, 18,948.90 and 9,701.40 is: 14,566.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.80 : 18,948.90 = 9,701.40 : x
  2. Step 2: Convert to fraction form
    12,619.80/18,948.90 = 9,701.40/x
  3. Step 3: Cross multiply
    12,619.80x = 18,948.90 × 9,701.40
  4. Step 4: Simplify right side
    12,619.80x = 183,830,858.46
  5. Step 5: Solve for x
    x = 183,830,858.46/12,619.80
  6. Step 6: Final answer
    x = 14,566.86

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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.