Home / 28,011.60-38,655.51-15,264.89

Finding the Fourth Proportional to 28,011.60, 38,655.51 and 15,264.89

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Solution

The fourth proportional to 28,011.60, 38,655.51 and 15,264.89 is: 21,065.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.60 : 38,655.51 = 15,264.89 : x
  2. Step 2: Convert to fraction form
    28,011.60/38,655.51 = 15,264.89/x
  3. Step 3: Cross multiply
    28,011.60x = 38,655.51 × 15,264.89
  4. Step 4: Simplify right side
    28,011.60x = 590,071,914.77
  5. Step 5: Solve for x
    x = 590,071,914.77/28,011.60
  6. Step 6: Final answer
    x = 21,065.27

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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.