Home / 28,308.64-42,444.96-13,509.76

Finding the Fourth Proportional to 28,308.64, 42,444.96 and 13,509.76

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Solution

The fourth proportional to 28,308.64, 42,444.96 and 13,509.76 is: 20,256.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.64 : 42,444.96 = 13,509.76 : x
  2. Step 2: Convert to fraction form
    28,308.64/42,444.96 = 13,509.76/x
  3. Step 3: Cross multiply
    28,308.64x = 42,444.96 × 13,509.76
  4. Step 4: Simplify right side
    28,308.64x = 573,421,222.81
  5. Step 5: Solve for x
    x = 573,421,222.81/28,308.64
  6. Step 6: Final answer
    x = 20,256.05

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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.