Home / 39,875.22-55,030.30-21,970.22

Finding the Fourth Proportional to 39,875.22, 55,030.30 and 21,970.22

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Solution

The fourth proportional to 39,875.22, 55,030.30 and 21,970.22 is: 30,320.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.22 : 55,030.30 = 21,970.22 : x
  2. Step 2: Convert to fraction form
    39,875.22/55,030.30 = 21,970.22/x
  3. Step 3: Cross multiply
    39,875.22x = 55,030.30 × 21,970.22
  4. Step 4: Simplify right side
    39,875.22x = 1,209,027,797.67
  5. Step 5: Solve for x
    x = 1,209,027,797.67/39,875.22
  6. Step 6: Final answer
    x = 30,320.28

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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.