Home / 28,402,769.20-42,604,153.80-13,258,231.60

Finding the Fourth Proportional to 28,402,769.20, 42,604,153.80 and 13,258,231.60

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Solution

The fourth proportional to 28,402,769.20, 42,604,153.80 and 13,258,231.60 is: 19,887,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402,769.20 : 42,604,153.80 = 13,258,231.60 : x
  2. Step 2: Convert to fraction form
    28,402,769.20/42,604,153.80 = 13,258,231.60/x
  3. Step 3: Cross multiply
    28,402,769.20x = 42,604,153.80 × 13,258,231.60
  4. Step 4: Simplify right side
    28,402,769.20x = 564,855,738,202,420
  5. Step 5: Solve for x
    x = 564,855,738,202,420/28,402,769.20
  6. Step 6: Final answer
    x = 19,887,347.40

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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.