Home / 13,710,979.76-18,920,881.53-7,516,039.82

Finding the Fourth Proportional to 13,710,979.76, 18,920,881.53 and 7,516,039.82

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Solution

The fourth proportional to 13,710,979.76, 18,920,881.53 and 7,516,039.82 is: 10,371,986.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710,979.76 : 18,920,881.53 = 7,516,039.82 : x
  2. Step 2: Convert to fraction form
    13,710,979.76/18,920,881.53 = 7,516,039.82/x
  3. Step 3: Cross multiply
    13,710,979.76x = 18,920,881.53 × 7,516,039.82
  4. Step 4: Simplify right side
    13,710,979.76x = 142,210,098,914,378.12
  5. Step 5: Solve for x
    x = 142,210,098,914,378.12/13,710,979.76
  6. Step 6: Final answer
    x = 10,371,986.65

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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.