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Finding the Fourth Proportional to 28,602.74, 42,886.73 and 12,804.77

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Solution

The fourth proportional to 28,602.74, 42,886.73 and 12,804.77 is: 19,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.74 : 42,886.73 = 12,804.77 : x
  2. Step 2: Convert to fraction form
    28,602.74/42,886.73 = 12,804.77/x
  3. Step 3: Cross multiply
    28,602.74x = 42,886.73 × 12,804.77
  4. Step 4: Simplify right side
    28,602.74x = 549,154,531.28
  5. Step 5: Solve for x
    x = 549,154,531.28/28,602.74
  6. Step 6: Final answer
    x = 19,199.37

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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.