Home / 21,020,065.70-31,514,966.26-12,916,298.39

Finding the Fourth Proportional to 21,020,065.70, 31,514,966.26 and 12,916,298.39

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Solution

The fourth proportional to 21,020,065.70, 31,514,966.26 and 12,916,298.39 is: 19,365,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020,065.70 : 31,514,966.26 = 12,916,298.39 : x
  2. Step 2: Convert to fraction form
    21,020,065.70/31,514,966.26 = 12,916,298.39/x
  3. Step 3: Cross multiply
    21,020,065.70x = 31,514,966.26 × 12,916,298.39
  4. Step 4: Simplify right side
    21,020,065.70x = 407,056,707,964,942.38
  5. Step 5: Solve for x
    x = 407,056,707,964,942.38/21,020,065.70
  6. Step 6: Final answer
    x = 19,365,149.18

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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.