Home / 21,780,921.60-32,671,382.40-20,788,898.40

Finding the Fourth Proportional to 21,780,921.60, 32,671,382.40 and 20,788,898.40

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Solution

The fourth proportional to 21,780,921.60, 32,671,382.40 and 20,788,898.40 is: 31,183,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,921.60 : 32,671,382.40 = 20,788,898.40 : x
  2. Step 2: Convert to fraction form
    21,780,921.60/32,671,382.40 = 20,788,898.40/x
  3. Step 3: Cross multiply
    21,780,921.60x = 32,671,382.40 × 20,788,898.40
  4. Step 4: Simplify right side
    21,780,921.60x = 679,202,049,301,148.12
  5. Step 5: Solve for x
    x = 679,202,049,301,148.12/21,780,921.60
  6. Step 6: Final answer
    x = 31,183,347.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.