Home / 20,754,420.90-31,140,488.70-9,966,168.60

Finding the Fourth Proportional to 20,754,420.90, 31,140,488.70 and 9,966,168.60

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Solution

The fourth proportional to 20,754,420.90, 31,140,488.70 and 9,966,168.60 is: 14,953,506.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,420.90 : 31,140,488.70 = 9,966,168.60 : x
  2. Step 2: Convert to fraction form
    20,754,420.90/31,140,488.70 = 9,966,168.60/x
  3. Step 3: Cross multiply
    20,754,420.90x = 31,140,488.70 × 9,966,168.60
  4. Step 4: Simplify right side
    20,754,420.90x = 310,351,360,670,594.81
  5. Step 5: Solve for x
    x = 310,351,360,670,594.81/20,754,420.90
  6. Step 6: Final answer
    x = 14,953,506.15

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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.