Home / 12,921,289.40-19,381,934.10-12,832,815.80

Finding the Fourth Proportional to 12,921,289.40, 19,381,934.10 and 12,832,815.80

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Solution

The fourth proportional to 12,921,289.40, 19,381,934.10 and 12,832,815.80 is: 19,249,223.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,289.40 : 19,381,934.10 = 12,832,815.80 : x
  2. Step 2: Convert to fraction form
    12,921,289.40/19,381,934.10 = 12,832,815.80/x
  3. Step 3: Cross multiply
    12,921,289.40x = 19,381,934.10 × 12,832,815.80
  4. Step 4: Simplify right side
    12,921,289.40x = 248,724,790,153,038.81
  5. Step 5: Solve for x
    x = 248,724,790,153,038.81/12,921,289.40
  6. Step 6: Final answer
    x = 19,249,223.70

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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.