Home / 20,937,455.30-28,889,411.00-12,233,946.78

Finding the Fourth Proportional to 20,937,455.30, 28,889,411.00 and 12,233,946.78

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Solution

The fourth proportional to 20,937,455.30, 28,889,411.00 and 12,233,946.78 is: 16,880,347.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937,455.30 : 28,889,411.00 = 12,233,946.78 : x
  2. Step 2: Convert to fraction form
    20,937,455.30/28,889,411.00 = 12,233,946.78/x
  3. Step 3: Cross multiply
    20,937,455.30x = 28,889,411.00 × 12,233,946.78
  4. Step 4: Simplify right side
    20,937,455.30x = 353,431,516,618,376.81
  5. Step 5: Solve for x
    x = 353,431,516,618,376.81/20,937,455.30
  6. Step 6: Final answer
    x = 16,880,347.28

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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.