Home / 18,928,920-26,121,909.72-10,780,916.16

Finding the Fourth Proportional to 18,928,920, 26,121,909.72 and 10,780,916.16

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Solution

The fourth proportional to 18,928,920, 26,121,909.72 and 10,780,916.16 is: 14,877,664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,920 : 26,121,909.72 = 10,780,916.16 : x
  2. Step 2: Convert to fraction form
    18,928,920/26,121,909.72 = 10,780,916.16/x
  3. Step 3: Cross multiply
    18,928,920x = 26,121,909.72 × 10,780,916.16
  4. Step 4: Simplify right side
    18,928,920x = 281,618,118,630,409.06
  5. Step 5: Solve for x
    x = 281,618,118,630,409.06/18,928,920
  6. Step 6: Final answer
    x = 14,877,664.37

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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.