Home / 21,503.06-29,686.56-14,331.08

Finding the Fourth Proportional to 21,503.06, 29,686.56 and 14,331.08

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Solution

The fourth proportional to 21,503.06, 29,686.56 and 14,331.08 is: 19,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,503.06 : 29,686.56 = 14,331.08 : x
  2. Step 2: Convert to fraction form
    21,503.06/29,686.56 = 14,331.08/x
  3. Step 3: Cross multiply
    21,503.06x = 29,686.56 × 14,331.08
  4. Step 4: Simplify right side
    21,503.06x = 425,440,466.28
  5. Step 5: Solve for x
    x = 425,440,466.28/21,503.06
  6. Step 6: Final answer
    x = 19,785.11

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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.