Home / 35,421.74-48,876.80-20,315.03

Finding the Fourth Proportional to 35,421.74, 48,876.80 and 20,315.03

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Solution

The fourth proportional to 35,421.74, 48,876.80 and 20,315.03 is: 28,031.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,421.74 : 48,876.80 = 20,315.03 : x
  2. Step 2: Convert to fraction form
    35,421.74/48,876.80 = 20,315.03/x
  3. Step 3: Cross multiply
    35,421.74x = 48,876.80 × 20,315.03
  4. Step 4: Simplify right side
    35,421.74x = 992,933,831.28
  5. Step 5: Solve for x
    x = 992,933,831.28/35,421.74
  6. Step 6: Final answer
    x = 28,031.77

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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.