Home / 12,991,303.04-17,927,447.20-7,189,542.40

Finding the Fourth Proportional to 12,991,303.04, 17,927,447.20 and 7,189,542.40

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Solution

The fourth proportional to 12,991,303.04, 17,927,447.20 and 7,189,542.40 is: 9,921,263.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991,303.04 : 17,927,447.20 = 7,189,542.40 : x
  2. Step 2: Convert to fraction form
    12,991,303.04/17,927,447.20 = 7,189,542.40/x
  3. Step 3: Cross multiply
    12,991,303.04x = 17,927,447.20 × 7,189,542.40
  4. Step 4: Simplify right side
    12,991,303.04x = 128,890,141,768,161.28
  5. Step 5: Solve for x
    x = 128,890,141,768,161.28/12,991,303.04
  6. Step 6: Final answer
    x = 9,921,263.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.