Home / 15,509,899.32-21,402,970.50-8,889,742.20

Finding the Fourth Proportional to 15,509,899.32, 21,402,970.50 and 8,889,742.20

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Solution

The fourth proportional to 15,509,899.32, 21,402,970.50 and 8,889,742.20 is: 12,267,448.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509,899.32 : 21,402,970.50 = 8,889,742.20 : x
  2. Step 2: Convert to fraction form
    15,509,899.32/21,402,970.50 = 8,889,742.20/x
  3. Step 3: Cross multiply
    15,509,899.32x = 21,402,970.50 × 8,889,742.20
  4. Step 4: Simplify right side
    15,509,899.32x = 190,266,890,059,205.09
  5. Step 5: Solve for x
    x = 190,266,890,059,205.09/15,509,899.32
  6. Step 6: Final answer
    x = 12,267,448.43

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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.