Home / 9,985.20-14,977.80-4,140.24

Finding the Fourth Proportional to 9,985.20, 14,977.80 and 4,140.24

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Solution

The fourth proportional to 9,985.20, 14,977.80 and 4,140.24 is: 6,210.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.20 : 14,977.80 = 4,140.24 : x
  2. Step 2: Convert to fraction form
    9,985.20/14,977.80 = 4,140.24/x
  3. Step 3: Cross multiply
    9,985.20x = 14,977.80 × 4,140.24
  4. Step 4: Simplify right side
    9,985.20x = 62,011,686.67
  5. Step 5: Solve for x
    x = 62,011,686.67/9,985.20
  6. Step 6: Final answer
    x = 6,210.36

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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.