Home / 21,548.80-32,301.60-9,870.40

Finding the Fourth Proportional to 21,548.80, 32,301.60 and 9,870.40

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Solution

The fourth proportional to 21,548.80, 32,301.60 and 9,870.40 is: 14,795.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.80 : 32,301.60 = 9,870.40 : x
  2. Step 2: Convert to fraction form
    21,548.80/32,301.60 = 9,870.40/x
  3. Step 3: Cross multiply
    21,548.80x = 32,301.60 × 9,870.40
  4. Step 4: Simplify right side
    21,548.80x = 318,829,712.64
  5. Step 5: Solve for x
    x = 318,829,712.64/21,548.80
  6. Step 6: Final answer
    x = 14,795.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.