Home / 31,518.60-47,220.30-25,643.40

Finding the Fourth Proportional to 31,518.60, 47,220.30 and 25,643.40

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Solution

The fourth proportional to 31,518.60, 47,220.30 and 25,643.40 is: 38,418.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.60 : 47,220.30 = 25,643.40 : x
  2. Step 2: Convert to fraction form
    31,518.60/47,220.30 = 25,643.40/x
  3. Step 3: Cross multiply
    31,518.60x = 47,220.30 × 25,643.40
  4. Step 4: Simplify right side
    31,518.60x = 1,210,889,041.02
  5. Step 5: Solve for x
    x = 1,210,889,041.02/31,518.60
  6. Step 6: Final answer
    x = 38,418.24

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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.