Home / 21,019,812.90-31,514,587.02-12,916,045.02

Finding the Fourth Proportional to 21,019,812.90, 31,514,587.02 and 12,916,045.02

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Solution

The fourth proportional to 21,019,812.90, 31,514,587.02 and 12,916,045.02 is: 19,364,769.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019,812.90 : 31,514,587.02 = 12,916,045.02 : x
  2. Step 2: Convert to fraction form
    21,019,812.90/31,514,587.02 = 12,916,045.02/x
  3. Step 3: Cross multiply
    21,019,812.90x = 31,514,587.02 × 12,916,045.02
  4. Step 4: Simplify right side
    21,019,812.90x = 407,043,824,737,027.62
  5. Step 5: Solve for x
    x = 407,043,824,737,027.62/21,019,812.90
  6. Step 6: Final answer
    x = 19,364,769.17

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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.