Home / 12,977,539.16-17,909,120.08-7,176,711.20

Finding the Fourth Proportional to 12,977,539.16, 17,909,120.08 and 7,176,711.20

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Solution

The fourth proportional to 12,977,539.16, 17,909,120.08 and 7,176,711.20 is: 9,903,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977,539.16 : 17,909,120.08 = 7,176,711.20 : x
  2. Step 2: Convert to fraction form
    12,977,539.16/17,909,120.08 = 7,176,711.20/x
  3. Step 3: Cross multiply
    12,977,539.16x = 17,909,120.08 × 7,176,711.20
  4. Step 4: Simplify right side
    12,977,539.16x = 128,528,582,660,280.89
  5. Step 5: Solve for x
    x = 128,528,582,660,280.89/12,977,539.16
  6. Step 6: Final answer
    x = 9,903,925.63

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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.