Home / 21,020,051.52-31,514,944.98-12,916,284.08

Finding the Fourth Proportional to 21,020,051.52, 31,514,944.98 and 12,916,284.08

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Solution

The fourth proportional to 21,020,051.52, 31,514,944.98 and 12,916,284.08 is: 19,365,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020,051.52 : 31,514,944.98 = 12,916,284.08 : x
  2. Step 2: Convert to fraction form
    21,020,051.52/31,514,944.98 = 12,916,284.08/x
  3. Step 3: Cross multiply
    21,020,051.52x = 31,514,944.98 × 12,916,284.08
  4. Step 4: Simplify right side
    21,020,051.52x = 407,055,981,969,675.19
  5. Step 5: Solve for x
    x = 407,055,981,969,675.19/21,020,051.52
  6. Step 6: Final answer
    x = 19,365,127.70

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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.