Home / 21,077.81-31,627.65-15,282.26

Finding the Fourth Proportional to 21,077.81, 31,627.65 and 15,282.26

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Solution

The fourth proportional to 21,077.81, 31,627.65 and 15,282.26 is: 22,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.81 : 31,627.65 = 15,282.26 : x
  2. Step 2: Convert to fraction form
    21,077.81/31,627.65 = 15,282.26/x
  3. Step 3: Cross multiply
    21,077.81x = 31,627.65 × 15,282.26
  4. Step 4: Simplify right side
    21,077.81x = 483,341,970.49
  5. Step 5: Solve for x
    x = 483,341,970.49/21,077.81
  6. Step 6: Final answer
    x = 22,931.32

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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.