Home / 31,485.04-43,437.95-17,865.20

Finding the Fourth Proportional to 31,485.04, 43,437.95 and 17,865.20

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Solution

The fourth proportional to 31,485.04, 43,437.95 and 17,865.20 is: 24,647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,485.04 : 43,437.95 = 17,865.20 : x
  2. Step 2: Convert to fraction form
    31,485.04/43,437.95 = 17,865.20/x
  3. Step 3: Cross multiply
    31,485.04x = 43,437.95 × 17,865.20
  4. Step 4: Simplify right side
    31,485.04x = 776,027,488.75
  5. Step 5: Solve for x
    x = 776,027,488.75/31,485.04
  6. Step 6: Final answer
    x = 24,647.50

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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.