Home / 21,422.48-29,547.09-13,862.98

Finding the Fourth Proportional to 21,422.48, 29,547.09 and 13,862.98

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Solution

The fourth proportional to 21,422.48, 29,547.09 and 13,862.98 is: 19,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.48 : 29,547.09 = 13,862.98 : x
  2. Step 2: Convert to fraction form
    21,422.48/29,547.09 = 13,862.98/x
  3. Step 3: Cross multiply
    21,422.48x = 29,547.09 × 13,862.98
  4. Step 4: Simplify right side
    21,422.48x = 409,610,649.51
  5. Step 5: Solve for x
    x = 409,610,649.51/21,422.48
  6. Step 6: Final answer
    x = 19,120.60

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1.5x scale

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.