Home / 10,720.04-14,779.40-8,798.72

Finding the Fourth Proportional to 10,720.04, 14,779.40 and 8,798.72

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Solution

The fourth proportional to 10,720.04, 14,779.40 and 8,798.72 is: 12,130.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.04 : 14,779.40 = 8,798.72 : x
  2. Step 2: Convert to fraction form
    10,720.04/14,779.40 = 8,798.72/x
  3. Step 3: Cross multiply
    10,720.04x = 14,779.40 × 8,798.72
  4. Step 4: Simplify right side
    10,720.04x = 130,039,684.48
  5. Step 5: Solve for x
    x = 130,039,684.48/10,720.04
  6. Step 6: Final answer
    x = 12,130.53

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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.