Home / 21,406.58-29,547.02-12,455.82

Finding the Fourth Proportional to 21,406.58, 29,547.02 and 12,455.82

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Solution

The fourth proportional to 21,406.58, 29,547.02 and 12,455.82 is: 17,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.58 : 29,547.02 = 12,455.82 : x
  2. Step 2: Convert to fraction form
    21,406.58/29,547.02 = 12,455.82/x
  3. Step 3: Cross multiply
    21,406.58x = 29,547.02 × 12,455.82
  4. Step 4: Simplify right side
    21,406.58x = 368,032,393.80
  5. Step 5: Solve for x
    x = 368,032,393.80/21,406.58
  6. Step 6: Final answer
    x = 17,192.49

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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.