Home / 21,021,901.48-31,533,977.98-6,643,875.24

Finding the Fourth Proportional to 21,021,901.48, 31,533,977.98 and 6,643,875.24

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Solution

The fourth proportional to 21,021,901.48, 31,533,977.98 and 6,643,875.24 is: 9,966,168.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021,901.48 : 31,533,977.98 = 6,643,875.24 : x
  2. Step 2: Convert to fraction form
    21,021,901.48/31,533,977.98 = 6,643,875.24/x
  3. Step 3: Cross multiply
    21,021,901.48x = 31,533,977.98 × 6,643,875.24
  4. Step 4: Simplify right side
    21,021,901.48x = 209,507,815,520,027.22
  5. Step 5: Solve for x
    x = 209,507,815,520,027.22/21,021,901.48
  6. Step 6: Final answer
    x = 9,966,168.65

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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.