Home / 13,539,547.20-18,685,059.36-7,428,152.64

Finding the Fourth Proportional to 13,539,547.20, 18,685,059.36 and 7,428,152.64

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Solution

The fourth proportional to 13,539,547.20, 18,685,059.36 and 7,428,152.64 is: 10,251,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539,547.20 : 18,685,059.36 = 7,428,152.64 : x
  2. Step 2: Convert to fraction form
    13,539,547.20/18,685,059.36 = 7,428,152.64/x
  3. Step 3: Cross multiply
    13,539,547.20x = 18,685,059.36 × 7,428,152.64
  4. Step 4: Simplify right side
    13,539,547.20x = 138,795,473,013,540.70
  5. Step 5: Solve for x
    x = 138,795,473,013,540.70/13,539,547.20
  6. Step 6: Final answer
    x = 10,251,116.30

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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.