Home / 28,148.34-38,809.47-20,588.58

Finding the Fourth Proportional to 28,148.34, 38,809.47 and 20,588.58

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Solution

The fourth proportional to 28,148.34, 38,809.47 and 20,588.58 is: 28,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.34 : 38,809.47 = 20,588.58 : x
  2. Step 2: Convert to fraction form
    28,148.34/38,809.47 = 20,588.58/x
  3. Step 3: Cross multiply
    28,148.34x = 38,809.47 × 20,588.58
  4. Step 4: Simplify right side
    28,148.34x = 799,031,877.85
  5. Step 5: Solve for x
    x = 799,031,877.85/28,148.34
  6. Step 6: Final answer
    x = 28,386.47

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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.