Home / 14,795.48-20,417.28-8,421.68

Finding the Fourth Proportional to 14,795.48, 20,417.28 and 8,421.68

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Solution

The fourth proportional to 14,795.48, 20,417.28 and 8,421.68 is: 11,621.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,795.48 : 20,417.28 = 8,421.68 : x
  2. Step 2: Convert to fraction form
    14,795.48/20,417.28 = 8,421.68/x
  3. Step 3: Cross multiply
    14,795.48x = 20,417.28 × 8,421.68
  4. Step 4: Simplify right side
    14,795.48x = 171,947,798.63
  5. Step 5: Solve for x
    x = 171,947,798.63/14,795.48
  6. Step 6: Final answer
    x = 11,621.64

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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.