Home / 12,459,077.20-18,688,615.80-7,651,176.40

Finding the Fourth Proportional to 12,459,077.20, 18,688,615.80 and 7,651,176.40

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Solution

The fourth proportional to 12,459,077.20, 18,688,615.80 and 7,651,176.40 is: 11,476,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459,077.20 : 18,688,615.80 = 7,651,176.40 : x
  2. Step 2: Convert to fraction form
    12,459,077.20/18,688,615.80 = 7,651,176.40/x
  3. Step 3: Cross multiply
    12,459,077.20x = 18,688,615.80 × 7,651,176.40
  4. Step 4: Simplify right side
    12,459,077.20x = 142,989,896,157,627.12
  5. Step 5: Solve for x
    x = 142,989,896,157,627.12/12,459,077.20
  6. Step 6: Final answer
    x = 11,476,764.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.