Home / 21,129,031.65-31,700,349.86-9,618,617.37

Finding the Fourth Proportional to 21,129,031.65, 31,700,349.86 and 9,618,617.37

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Solution

The fourth proportional to 21,129,031.65, 31,700,349.86 and 9,618,617.37 is: 14,431,022.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,129,031.65 : 31,700,349.86 = 9,618,617.37 : x
  2. Step 2: Convert to fraction form
    21,129,031.65/31,700,349.86 = 9,618,617.37/x
  3. Step 3: Cross multiply
    21,129,031.65x = 31,700,349.86 × 9,618,617.37
  4. Step 4: Simplify right side
    21,129,031.65x = 304,913,535,798,473.06
  5. Step 5: Solve for x
    x = 304,913,535,798,473.06/21,129,031.65
  6. Step 6: Final answer
    x = 14,431,022.72

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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.