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Finding the Fourth Proportional to 21,482.65, 32,225.51 and 8,990.10

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Solution

The fourth proportional to 21,482.65, 32,225.51 and 8,990.10 is: 13,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482.65 : 32,225.51 = 8,990.10 : x
  2. Step 2: Convert to fraction form
    21,482.65/32,225.51 = 8,990.10/x
  3. Step 3: Cross multiply
    21,482.65x = 32,225.51 × 8,990.10
  4. Step 4: Simplify right side
    21,482.65x = 289,710,396.32
  5. Step 5: Solve for x
    x = 289,710,396.32/21,482.65
  6. Step 6: Final answer
    x = 13,485.78

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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.