Home / 28,312,492.80-42,468,739.20-15,528,057.60

Finding the Fourth Proportional to 28,312,492.80, 42,468,739.20 and 15,528,057.60

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Solution

The fourth proportional to 28,312,492.80, 42,468,739.20 and 15,528,057.60 is: 23,292,086.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312,492.80 : 42,468,739.20 = 15,528,057.60 : x
  2. Step 2: Convert to fraction form
    28,312,492.80/42,468,739.20 = 15,528,057.60/x
  3. Step 3: Cross multiply
    28,312,492.80x = 42,468,739.20 × 15,528,057.60
  4. Step 4: Simplify right side
    28,312,492.80x = 659,457,028,496,978
  5. Step 5: Solve for x
    x = 659,457,028,496,978/28,312,492.80
  6. Step 6: Final answer
    x = 23,292,086.40

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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.