Home / 20,697,895.60-28,561,916.12-11,875,476.71

Finding the Fourth Proportional to 20,697,895.60, 28,561,916.12 and 11,875,476.71

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Solution

The fourth proportional to 20,697,895.60, 28,561,916.12 and 11,875,476.71 is: 16,387,480.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697,895.60 : 28,561,916.12 = 11,875,476.71 : x
  2. Step 2: Convert to fraction form
    20,697,895.60/28,561,916.12 = 11,875,476.71/x
  3. Step 3: Cross multiply
    20,697,895.60x = 28,561,916.12 × 11,875,476.71
  4. Step 4: Simplify right side
    20,697,895.60x = 339,186,369,688,060.94
  5. Step 5: Solve for x
    x = 339,186,369,688,060.94/20,697,895.60
  6. Step 6: Final answer
    x = 16,387,480.94

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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.