Home / 28,905,831.17-39,892,569.86-15,855,612.39

Finding the Fourth Proportional to 28,905,831.17, 39,892,569.86 and 15,855,612.39

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Solution

The fourth proportional to 28,905,831.17, 39,892,569.86 and 15,855,612.39 is: 21,882,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905,831.17 : 39,892,569.86 = 15,855,612.39 : x
  2. Step 2: Convert to fraction form
    28,905,831.17/39,892,569.86 = 15,855,612.39/x
  3. Step 3: Cross multiply
    28,905,831.17x = 39,892,569.86 × 15,855,612.39
  4. Step 4: Simplify right side
    28,905,831.17x = 632,521,124,861,878.50
  5. Step 5: Solve for x
    x = 632,521,124,861,878.50/28,905,831.17
  6. Step 6: Final answer
    x = 21,882,128.95

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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.