Home / 19,345.61-28,999.85-12,303.77

Finding the Fourth Proportional to 19,345.61, 28,999.85 and 12,303.77

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Solution

The fourth proportional to 19,345.61, 28,999.85 and 12,303.77 is: 18,443.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,345.61 : 28,999.85 = 12,303.77 : x
  2. Step 2: Convert to fraction form
    19,345.61/28,999.85 = 12,303.77/x
  3. Step 3: Cross multiply
    19,345.61x = 28,999.85 × 12,303.77
  4. Step 4: Simplify right side
    19,345.61x = 356,807,557.21
  5. Step 5: Solve for x
    x = 356,807,557.21/19,345.61
  6. Step 6: Final answer
    x = 18,443.85

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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.