Home / 12,774,834.40-19,176,248.40-7,987,928.80

Finding the Fourth Proportional to 12,774,834.40, 19,176,248.40 and 7,987,928.80

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Solution

The fourth proportional to 12,774,834.40, 19,176,248.40 and 7,987,928.80 is: 11,990,645.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774,834.40 : 19,176,248.40 = 7,987,928.80 : x
  2. Step 2: Convert to fraction form
    12,774,834.40/19,176,248.40 = 7,987,928.80/x
  3. Step 3: Cross multiply
    12,774,834.40x = 19,176,248.40 × 7,987,928.80
  4. Step 4: Simplify right side
    12,774,834.40x = 153,178,506,870,313.91
  5. Step 5: Solve for x
    x = 153,178,506,870,313.91/12,774,834.40
  6. Step 6: Final answer
    x = 11,990,645.21

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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.