Home / 28,089.08-38,726.02-21,635.98

Finding the Fourth Proportional to 28,089.08, 38,726.02 and 21,635.98

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Solution

The fourth proportional to 28,089.08, 38,726.02 and 21,635.98 is: 29,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.08 : 38,726.02 = 21,635.98 : x
  2. Step 2: Convert to fraction form
    28,089.08/38,726.02 = 21,635.98/x
  3. Step 3: Cross multiply
    28,089.08x = 38,726.02 × 21,635.98
  4. Step 4: Simplify right side
    28,089.08x = 837,875,394.20
  5. Step 5: Solve for x
    x = 837,875,394.20/28,089.08
  6. Step 6: Final answer
    x = 29,829.22

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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.