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Finding the Fourth Proportional to 28,364.67, 42,547.00 and 7,587.63

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Solution

The fourth proportional to 28,364.67, 42,547.00 and 7,587.63 is: 11,381.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.67 : 42,547.00 = 7,587.63 : x
  2. Step 2: Convert to fraction form
    28,364.67/42,547.00 = 7,587.63/x
  3. Step 3: Cross multiply
    28,364.67x = 42,547.00 × 7,587.63
  4. Step 4: Simplify right side
    28,364.67x = 322,830,661.91
  5. Step 5: Solve for x
    x = 322,830,661.91/28,364.67
  6. Step 6: Final answer
    x = 11,381.44

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Double scale
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Similar ratio
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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.