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Finding the Fourth Proportional to 28,646.51, 42,969.78 and 8,925.06

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Solution

The fourth proportional to 28,646.51, 42,969.78 and 8,925.06 is: 13,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.51 : 42,969.78 = 8,925.06 : x
  2. Step 2: Convert to fraction form
    28,646.51/42,969.78 = 8,925.06/x
  3. Step 3: Cross multiply
    28,646.51x = 42,969.78 × 8,925.06
  4. Step 4: Simplify right side
    28,646.51x = 383,507,864.69
  5. Step 5: Solve for x
    x = 383,507,864.69/28,646.51
  6. Step 6: Final answer
    x = 13,387.60

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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.