Home / 19,985.14-27,590.04-12,915.58

Finding the Fourth Proportional to 19,985.14, 27,590.04 and 12,915.58

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Solution

The fourth proportional to 19,985.14, 27,590.04 and 12,915.58 is: 17,830.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.14 : 27,590.04 = 12,915.58 : x
  2. Step 2: Convert to fraction form
    19,985.14/27,590.04 = 12,915.58/x
  3. Step 3: Cross multiply
    19,985.14x = 27,590.04 × 12,915.58
  4. Step 4: Simplify right side
    19,985.14x = 356,341,368.82
  5. Step 5: Solve for x
    x = 356,341,368.82/19,985.14
  6. Step 6: Final answer
    x = 17,830.32

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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.