Home / 28,439,095.80-42,658,643.70-18,235,428.60

Finding the Fourth Proportional to 28,439,095.80, 42,658,643.70 and 18,235,428.60

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Solution

The fourth proportional to 28,439,095.80, 42,658,643.70 and 18,235,428.60 is: 27,353,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439,095.80 : 42,658,643.70 = 18,235,428.60 : x
  2. Step 2: Convert to fraction form
    28,439,095.80/42,658,643.70 = 18,235,428.60/x
  3. Step 3: Cross multiply
    28,439,095.80x = 42,658,643.70 × 18,235,428.60
  4. Step 4: Simplify right side
    28,439,095.80x = 777,898,651,364,190
  5. Step 5: Solve for x
    x = 777,898,651,364,190/28,439,095.80
  6. Step 6: Final answer
    x = 27,353,142.90

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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.