Home / 28,507,982.40-42,761,973.60-9,339,364.80

Finding the Fourth Proportional to 28,507,982.40, 42,761,973.60 and 9,339,364.80

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Solution

The fourth proportional to 28,507,982.40, 42,761,973.60 and 9,339,364.80 is: 14,009,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507,982.40 : 42,761,973.60 = 9,339,364.80 : x
  2. Step 2: Convert to fraction form
    28,507,982.40/42,761,973.60 = 9,339,364.80/x
  3. Step 3: Cross multiply
    28,507,982.40x = 42,761,973.60 × 9,339,364.80
  4. Step 4: Simplify right side
    28,507,982.40x = 399,369,671,018,369.31
  5. Step 5: Solve for x
    x = 399,369,671,018,369.31/28,507,982.40
  6. Step 6: Final answer
    x = 14,009,047.20

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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.