Home / 21,302.40-29,397.60-11,870.64

Finding the Fourth Proportional to 21,302.40, 29,397.60 and 11,870.64

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Solution

The fourth proportional to 21,302.40, 29,397.60 and 11,870.64 is: 16,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.40 : 29,397.60 = 11,870.64 : x
  2. Step 2: Convert to fraction form
    21,302.40/29,397.60 = 11,870.64/x
  3. Step 3: Cross multiply
    21,302.40x = 29,397.60 × 11,870.64
  4. Step 4: Simplify right side
    21,302.40x = 348,968,326.46
  5. Step 5: Solve for x
    x = 348,968,326.46/21,302.40
  6. Step 6: Final answer
    x = 16,381.64

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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.