Home / 30,681.28-42,341.66-17,256.76

Finding the Fourth Proportional to 30,681.28, 42,341.66 and 17,256.76

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Solution

The fourth proportional to 30,681.28, 42,341.66 and 17,256.76 is: 23,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681.28 : 42,341.66 = 17,256.76 : x
  2. Step 2: Convert to fraction form
    30,681.28/42,341.66 = 17,256.76/x
  3. Step 3: Cross multiply
    30,681.28x = 42,341.66 × 17,256.76
  4. Step 4: Simplify right side
    30,681.28x = 730,679,864.62
  5. Step 5: Solve for x
    x = 730,679,864.62/30,681.28
  6. Step 6: Final answer
    x = 23,815.17

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.