Home / 40,686.40-61,038.32-12,605.83

Finding the Fourth Proportional to 40,686.40, 61,038.32 and 12,605.83

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Solution

The fourth proportional to 40,686.40, 61,038.32 and 12,605.83 is: 18,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,686.40 : 61,038.32 = 12,605.83 : x
  2. Step 2: Convert to fraction form
    40,686.40/61,038.32 = 12,605.83/x
  3. Step 3: Cross multiply
    40,686.40x = 61,038.32 × 12,605.83
  4. Step 4: Simplify right side
    40,686.40x = 769,438,864.90
  5. Step 5: Solve for x
    x = 769,438,864.90/40,686.40
  6. Step 6: Final answer
    x = 18,911.45

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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.