Home / 21,127,731.18-31,685,743.14-7,479,079.74

Finding the Fourth Proportional to 21,127,731.18, 31,685,743.14 and 7,479,079.74

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Solution

The fourth proportional to 21,127,731.18, 31,685,743.14 and 7,479,079.74 is: 11,216,547.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127,731.18 : 31,685,743.14 = 7,479,079.74 : x
  2. Step 2: Convert to fraction form
    21,127,731.18/31,685,743.14 = 7,479,079.74/x
  3. Step 3: Cross multiply
    21,127,731.18x = 31,685,743.14 × 7,479,079.74
  4. Step 4: Simplify right side
    21,127,731.18x = 236,980,199,565,218
  5. Step 5: Solve for x
    x = 236,980,199,565,218/21,127,731.18
  6. Step 6: Final answer
    x = 11,216,547.46

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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.