Home / 31,779.95-43,831.53-22,216.68

Finding the Fourth Proportional to 31,779.95, 43,831.53 and 22,216.68

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Solution

The fourth proportional to 31,779.95, 43,831.53 and 22,216.68 is: 30,641.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.95 : 43,831.53 = 22,216.68 : x
  2. Step 2: Convert to fraction form
    31,779.95/43,831.53 = 22,216.68/x
  3. Step 3: Cross multiply
    31,779.95x = 43,831.53 × 22,216.68
  4. Step 4: Simplify right side
    31,779.95x = 973,791,075.92
  5. Step 5: Solve for x
    x = 973,791,075.92/31,779.95
  6. Step 6: Final answer
    x = 30,641.69

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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.