Home / 28,516,811.10-42,775,216.65-20,958,539.10

Finding the Fourth Proportional to 28,516,811.10, 42,775,216.65 and 20,958,539.10

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Solution

The fourth proportional to 28,516,811.10, 42,775,216.65 and 20,958,539.10 is: 31,437,808.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516,811.10 : 42,775,216.65 = 20,958,539.10 : x
  2. Step 2: Convert to fraction form
    28,516,811.10/42,775,216.65 = 20,958,539.10/x
  3. Step 3: Cross multiply
    28,516,811.10x = 42,775,216.65 × 20,958,539.10
  4. Step 4: Simplify right side
    28,516,811.10x = 896,506,050,669,996
  5. Step 5: Solve for x
    x = 896,506,050,669,996/28,516,811.10
  6. Step 6: Final answer
    x = 31,437,808.65

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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.