Home / 9,990.04-14,987.40-2,970.10

Finding the Fourth Proportional to 9,990.04, 14,987.40 and 2,970.10

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Solution

The fourth proportional to 9,990.04, 14,987.40 and 2,970.10 is: 4,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.04 : 14,987.40 = 2,970.10 : x
  2. Step 2: Convert to fraction form
    9,990.04/14,987.40 = 2,970.10/x
  3. Step 3: Cross multiply
    9,990.04x = 14,987.40 × 2,970.10
  4. Step 4: Simplify right side
    9,990.04x = 44,514,076.74
  5. Step 5: Solve for x
    x = 44,514,076.74/9,990.04
  6. Step 6: Final answer
    x = 4,455.85

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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.