Home / 28,051.64-42,084.78-10,521.80

Finding the Fourth Proportional to 28,051.64, 42,084.78 and 10,521.80

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Solution

The fourth proportional to 28,051.64, 42,084.78 and 10,521.80 is: 15,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.64 : 42,084.78 = 10,521.80 : x
  2. Step 2: Convert to fraction form
    28,051.64/42,084.78 = 10,521.80/x
  3. Step 3: Cross multiply
    28,051.64x = 42,084.78 × 10,521.80
  4. Step 4: Simplify right side
    28,051.64x = 442,807,638.20
  5. Step 5: Solve for x
    x = 442,807,638.20/28,051.64
  6. Step 6: Final answer
    x = 15,785.45

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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.