Home / 12,121,973.60-18,160,908.96-7,057,931.36

Finding the Fourth Proportional to 12,121,973.60, 18,160,908.96 and 7,057,931.36

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Solution

The fourth proportional to 12,121,973.60, 18,160,908.96 and 7,057,931.36 is: 10,574,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,973.60 : 18,160,908.96 = 7,057,931.36 : x
  2. Step 2: Convert to fraction form
    12,121,973.60/18,160,908.96 = 7,057,931.36/x
  3. Step 3: Cross multiply
    12,121,973.60x = 18,160,908.96 × 7,057,931.36
  4. Step 4: Simplify right side
    12,121,973.60x = 128,178,448,874,889
  5. Step 5: Solve for x
    x = 128,178,448,874,889/12,121,973.60
  6. Step 6: Final answer
    x = 10,574,057.75

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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.