Home / 29,211.77-40,312.25-15,783.02

Finding the Fourth Proportional to 29,211.77, 40,312.25 and 15,783.02

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Solution

The fourth proportional to 29,211.77, 40,312.25 and 15,783.02 is: 21,780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,211.77 : 40,312.25 = 15,783.02 : x
  2. Step 2: Convert to fraction form
    29,211.77/40,312.25 = 15,783.02/x
  3. Step 3: Cross multiply
    29,211.77x = 40,312.25 × 15,783.02
  4. Step 4: Simplify right side
    29,211.77x = 636,248,885.89
  5. Step 5: Solve for x
    x = 636,248,885.89/29,211.77
  6. Step 6: Final answer
    x = 21,780.57

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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.