Home / 28,730,781.48-39,649,319.70-15,678,881.40

Finding the Fourth Proportional to 28,730,781.48, 39,649,319.70 and 15,678,881.40

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Solution

The fourth proportional to 28,730,781.48, 39,649,319.70 and 15,678,881.40 is: 21,637,315.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730,781.48 : 39,649,319.70 = 15,678,881.40 : x
  2. Step 2: Convert to fraction form
    28,730,781.48/39,649,319.70 = 15,678,881.40/x
  3. Step 3: Cross multiply
    28,730,781.48x = 39,649,319.70 × 15,678,881.40
  4. Step 4: Simplify right side
    28,730,781.48x = 621,656,981,166,983.62
  5. Step 5: Solve for x
    x = 621,656,981,166,983.62/28,730,781.48
  6. Step 6: Final answer
    x = 21,637,315.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.