Home / 21,139,886.81-29,172,547.63-12,438,623.00

Finding the Fourth Proportional to 21,139,886.81, 29,172,547.63 and 12,438,623.00

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Solution

The fourth proportional to 21,139,886.81, 29,172,547.63 and 12,438,623.00 is: 17,165,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,886.81 : 29,172,547.63 = 12,438,623.00 : x
  2. Step 2: Convert to fraction form
    21,139,886.81/29,172,547.63 = 12,438,623.00/x
  3. Step 3: Cross multiply
    21,139,886.81x = 29,172,547.63 × 12,438,623.00
  4. Step 4: Simplify right side
    21,139,886.81x = 362,866,321,937,625.88
  5. Step 5: Solve for x
    x = 362,866,321,937,625.88/21,139,886.81
  6. Step 6: Final answer
    x = 17,165,007.80

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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.