Home / 21,291,211.20-31,900,075.20-9,908,313.60

Finding the Fourth Proportional to 21,291,211.20, 31,900,075.20 and 9,908,313.60

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Solution

The fourth proportional to 21,291,211.20, 31,900,075.20 and 9,908,313.60 is: 14,845,371.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291,211.20 : 31,900,075.20 = 9,908,313.60 : x
  2. Step 2: Convert to fraction form
    21,291,211.20/31,900,075.20 = 9,908,313.60/x
  3. Step 3: Cross multiply
    21,291,211.20x = 31,900,075.20 × 9,908,313.60
  4. Step 4: Simplify right side
    21,291,211.20x = 316,075,948,945,182.69
  5. Step 5: Solve for x
    x = 316,075,948,945,182.69/21,291,211.20
  6. Step 6: Final answer
    x = 14,845,371.92

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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.