Home / 21,388.20-32,091.90-9,695.40

Finding the Fourth Proportional to 21,388.20, 32,091.90 and 9,695.40

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Solution

The fourth proportional to 21,388.20, 32,091.90 and 9,695.40 is: 14,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.20 : 32,091.90 = 9,695.40 : x
  2. Step 2: Convert to fraction form
    21,388.20/32,091.90 = 9,695.40/x
  3. Step 3: Cross multiply
    21,388.20x = 32,091.90 × 9,695.40
  4. Step 4: Simplify right side
    21,388.20x = 311,143,807.26
  5. Step 5: Solve for x
    x = 311,143,807.26/21,388.20
  6. Step 6: Final answer
    x = 14,547.45

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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.