Home / 13,749,531.52-18,973,709.76-7,638,332.80

Finding the Fourth Proportional to 13,749,531.52, 18,973,709.76 and 7,638,332.80

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Solution

The fourth proportional to 13,749,531.52, 18,973,709.76 and 7,638,332.80 is: 10,540,541.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749,531.52 : 18,973,709.76 = 7,638,332.80 : x
  2. Step 2: Convert to fraction form
    13,749,531.52/18,973,709.76 = 7,638,332.80/x
  3. Step 3: Cross multiply
    13,749,531.52x = 18,973,709.76 × 7,638,332.80
  4. Step 4: Simplify right side
    13,749,531.52x = 144,927,509,597,488.12
  5. Step 5: Solve for x
    x = 144,927,509,597,488.12/13,749,531.52
  6. Step 6: Final answer
    x = 10,540,541.65

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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.