Home / 28,019.16-38,666.70-15,444.36

Finding the Fourth Proportional to 28,019.16, 38,666.70 and 15,444.36

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Solution

The fourth proportional to 28,019.16, 38,666.70 and 15,444.36 is: 21,313.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.16 : 38,666.70 = 15,444.36 : x
  2. Step 2: Convert to fraction form
    28,019.16/38,666.70 = 15,444.36/x
  3. Step 3: Cross multiply
    28,019.16x = 38,666.70 × 15,444.36
  4. Step 4: Simplify right side
    28,019.16x = 597,182,434.81
  5. Step 5: Solve for x
    x = 597,182,434.81/28,019.16
  6. Step 6: Final answer
    x = 21,313.36

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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.