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Finding the Fourth Proportional to 12,865,468.68, 17,754,346.86 and 7,064,250.45

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Solution

The fourth proportional to 12,865,468.68, 17,754,346.86 and 7,064,250.45 is: 9,748,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865,468.68 : 17,754,346.86 = 7,064,250.45 : x
  2. Step 2: Convert to fraction form
    12,865,468.68/17,754,346.86 = 7,064,250.45/x
  3. Step 3: Cross multiply
    12,865,468.68x = 17,754,346.86 × 7,064,250.45
  4. Step 4: Simplify right side
    12,865,468.68x = 125,421,152,795,211.09
  5. Step 5: Solve for x
    x = 125,421,152,795,211.09/12,865,468.68
  6. Step 6: Final answer
    x = 9,748,665.67

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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.