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Finding the Fourth Proportional to 28,510.33, 42,754.86 and 9,785.06

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Solution

The fourth proportional to 28,510.33, 42,754.86 and 9,785.06 is: 14,673.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,510.33 : 42,754.86 = 9,785.06 : x
  2. Step 2: Convert to fraction form
    28,510.33/42,754.86 = 9,785.06/x
  3. Step 3: Cross multiply
    28,510.33x = 42,754.86 × 9,785.06
  4. Step 4: Simplify right side
    28,510.33x = 418,358,681.08
  5. Step 5: Solve for x
    x = 418,358,681.08/28,510.33
  6. Step 6: Final answer
    x = 14,673.93

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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.