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Finding the Fourth Proportional to 28,407.69, 42,605.42 and 10,637.64

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Solution

The fourth proportional to 28,407.69, 42,605.42 and 10,637.64 is: 15,954.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.69 : 42,605.42 = 10,637.64 : x
  2. Step 2: Convert to fraction form
    28,407.69/42,605.42 = 10,637.64/x
  3. Step 3: Cross multiply
    28,407.69x = 42,605.42 × 10,637.64
  4. Step 4: Simplify right side
    28,407.69x = 453,221,066.82
  5. Step 5: Solve for x
    x = 453,221,066.82/28,407.69
  6. Step 6: Final answer
    x = 15,954.17

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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.